diff --git a/basic_machines/autocrafter.lua b/basic_machines/autocrafter.lua
index 1cc2828..3295015 100644
--- a/basic_machines/autocrafter.lua
+++ b/basic_machines/autocrafter.lua
@@ -122,7 +122,6 @@ end
 
 
 local function keep_running(pos, elapsed)
-	print("autocrafter keep_running")
 	local nvm = techage.get_nvm(pos)
 	local crd = CRD(pos)
 	local inv = M(pos):get_inventory()
diff --git a/basic_machines/chest.lua b/basic_machines/chest.lua
index 2829e15..d0c03fd 100644
--- a/basic_machines/chest.lua
+++ b/basic_machines/chest.lua
@@ -239,6 +239,18 @@ minetest.register_craft({
 	recipe = {"default:chest", "techage:tubeS", "techage:iron_ingot"}
 })
 
+minetest.register_craft({
+	type = "shapeless",
+	output = "techage:chest_ta2",
+	recipe = {"default:chest_locked", "techage:tubeS", "techage:iron_ingot"}
+})
+
+minetest.register_craft({
+	type = "shapeless",
+	output = "techage:chest_ta2",
+	recipe = {"protector:chest", "techage:tubeS", "techage:iron_ingot"}
+})
+
 minetest.register_craft({
 	type = "shapeless",
 	output = "techage:chest_ta3",
diff --git a/basic_machines/ta4_chest.lua b/basic_machines/ta4_chest.lua
index 808f337..2a3bab9 100644
--- a/basic_machines/ta4_chest.lua
+++ b/basic_machines/ta4_chest.lua
@@ -95,6 +95,15 @@ local function sort_in(inv, nvm, stack)
 	return false
 end
 
+local function max_stack_size(item_name)
+	local ndef = minetest.registered_nodes[item_name] or minetest.registered_items[item_name] or minetest.registered_craftitems[item_name]
+	if ndef then 
+		return ndef.stack_max
+	end
+	return 0
+end
+
+
 local function get_item(inv, nvm, item_name, count)
 	local stack = {count = 0}
 	if not inv:is_empty("main") then
@@ -109,7 +118,7 @@ local function get_item(inv, nvm, item_name, count)
 	end
 	for _,item in ipairs(nvm.inventory or {}) do
 		if (item_name == nil and stack.name == nil) or item.name == item_name then
-			local num = math.min(item.count, count - stack.count)
+			local num = math.min(item.count, count - stack.count, max_stack_size(item.name))
 			item.count = item.count - num
 			stack.count = stack.count + num
 			if item.name ~= "" then
@@ -132,7 +141,7 @@ local function formspec_container(x, y, nvm, inv)
 	local tbl = {"container["..x..","..y.."]"}
 	for i = 1,8 do
 		local xpos = i - 1
-		tbl[#tbl+1] = "box["..xpos..",0;0.8,0.9;#808080]"
+		tbl[#tbl+1] = "box["..(xpos - 0.03)..",0;0.86,0.9;#808080]"
 		local stack = get_stack(nvm, i)
 		if stack.name ~= "" then
 			local itemname = stack.name.." "..stack.count
@@ -212,7 +221,7 @@ local function move_from_nvm_to_inv(pos, idx)
 	local nvm_stack = get_stack(nvm, idx)
 	
 	if nvm_stack.count > 0 and inv_stack:get_count() == 0 then
-		local count = math.min(nvm_stack.count, 99)
+		local count = math.min(nvm_stack.count, max_stack_size(nvm_stack.name))
 		nvm_stack.count = nvm_stack.count - count
 		inv:set_stack("main", idx, {name = nvm_stack.name, count = count})
 		if nvm_stack.count == 0 then
diff --git a/basis/lib.lua b/basis/lib.lua
index 2ab2a81..a87ab61 100644
--- a/basis/lib.lua
+++ b/basis/lib.lua
@@ -194,21 +194,36 @@ function techage.is_ocean(pos)
 	return true
 end
 
-
-
-local function tooltip(name)
-	name = string.split(name, " ")[1]
-	local ndef = minetest.registered_nodes[name] or minetest.registered_items[name] or minetest.registered_craftitems[name]
-	if ndef and ndef.description then
-		return minetest.formspec_escape(ndef.description)
-	end
-	return ""
-end
-
 function techage.item_image(x, y, itemname)
+	local name, size = unpack(string.split(itemname, " "))
+	local label = ""
+	local tooltip = ""
+	local ndef = minetest.registered_nodes[name] or minetest.registered_items[name] or minetest.registered_craftitems[name]
+	
+	if ndef and ndef.description then
+		local text = minetest.formspec_escape(ndef.description)
+		tooltip = "tooltip["..x..","..y..";1,1;"..text..";#0C3D32;#FFFFFF]"
+	end
+	
+	if ndef and ndef.stack_max == 1 then
+		size = tonumber(size)
+		local offs = 0
+		if size < 10 then
+			offs = 0.65
+		elseif size < 100 then
+			offs = 0.5
+		elseif size < 1000 then
+			offs = 0.35
+		else
+			offs = 0.2
+		end
+		label = "label["..(x + offs)..","..(y + 0.45)..";"..tostring(size).."]"
+	end
+	
 	return "box["..x..","..y..";0.85,0.9;#808080]"..
 		"item_image["..x..","..y..";1,1;"..itemname.."]"..
-		"tooltip["..x..","..y..";1,1;"..tooltip(itemname)..";#0C3D32;#FFFFFF]"
+		tooltip..
+		label
 end
 
 function techage.mydump(o, indent, nested, level)
diff --git a/chemistry/ta4_doser.lua b/chemistry/ta4_doser.lua
index b3f0edd..ed63184 100644
--- a/chemistry/ta4_doser.lua
+++ b/chemistry/ta4_doser.lua
@@ -81,6 +81,21 @@ local function del_liquids(pos)
 	Liquids[hash] = nil
 end
 	
+-- if liquids are missing, update the cached liquid table
+local function reload_liquids(pos)	
+	local hash = minetest.hash_node_position(pos)
+	-- determine the available input liquids
+	local tbl = {}
+	for outdir = 1,4 do
+		local name, num = liquid.peek(pos, outdir)
+		if name then
+			tbl[name] = outdir
+		end
+	end
+	Liquids[hash] = tbl
+	return Liquids[hash]
+end	
+
 local function reactor_cmnd(pos, cmnd, payload)
 	return techage.transfer(
 		pos, 
@@ -134,6 +149,7 @@ local function dosing(pos, nvm, elapsed)
 		if not nvm.techage_countdown or nvm.techage_countdown < 3 then
 			reactor_cmnd(pos, "stop")
 			State:nopower(pos, nvm, S("reactor has no power"))
+			return
 		end
 		State:idle(pos, nvm)
 		return
@@ -157,7 +173,7 @@ local function dosing(pos, nvm, elapsed)
 	local starter = get_starter_name(pos)
 	for _,item in pairs(recipe.input) do
 		if item.name ~= "" then
-			local outdir = liquids[item.name]
+			local outdir = liquids[item.name] or reload_liquids(pos)[item.name]
 			if not outdir then
 				State:standby(pos, nvm)
 				reactor_cmnd(pos, "stop")
@@ -286,7 +302,7 @@ minetest.register_node("techage:ta4_doser_on", {
 	},
 
 	tubelib2_on_update2 = function(pos, dir, tlib2, node)
-		liquid.update_network(pos)
+		liquid.update_network(pos, dir)
 		del_liquids(pos)
 	end,
 	on_receive_fields = on_receive_fields,
diff --git a/chemistry/ta4_stand.lua b/chemistry/ta4_stand.lua
index dd70661..a5c445d 100644
--- a/chemistry/ta4_stand.lua
+++ b/chemistry/ta4_stand.lua
@@ -158,6 +158,7 @@ techage.register_node({"techage:ta4_reactor_stand"}, {
 		elseif topic == "stop" then
 			nvm.has_power = false
 			power.consumer_stop(pos, Cable)
+			stop_sound(pos)
 			minetest.get_node_timer(pos):stop()
 			M(pos):set_string("infotext", S("off"))
 			return true
diff --git a/liquids/waterpump.lua b/liquids/waterpump.lua
index 90ebe17..5ad949c 100644
--- a/liquids/waterpump.lua
+++ b/liquids/waterpump.lua
@@ -86,7 +86,7 @@ local function pumping(pos, nvm)
 	if not nvm.running  then
 		State:nopower(pos, nvm)
 	else
-		local leftover = liquid.put(pos, 6, "default:water_source", 1)
+		local leftover = liquid.put(pos, 6, "techage:water", 1)
 		if leftover and leftover > 0 then
 			State:blocked(pos, nvm)
 			return