diff --git a/basis/lib.lua b/basis/lib.lua
index d47f5ac..6bf49dc 100644
--- a/basis/lib.lua
+++ b/basis/lib.lua
@@ -244,6 +244,17 @@ function techage.add_to_set(set, x)
 	end
 end
 
+-- techage.tbl_filter({"a", "b", "c", "d"}, function(v, k, t) return v >= "c" end)  --> {"c","d"}
+techage.tbl_filter = function(t, filterIter)
+	local out = {}
+
+	for k, v in pairs(t) do
+		if filterIter(v, k, t) then out[k] = v end
+	end
+
+	return out
+end
+
 function techage.get_node_lvm(pos)
 	local node = minetest.get_node_or_nil(pos)
 	if node then
diff --git a/fusion_reactor/controller.lua b/fusion_reactor/controller.lua
index 31f0401..8af0bd8 100644
--- a/fusion_reactor/controller.lua
+++ b/fusion_reactor/controller.lua
@@ -46,6 +46,7 @@ local function count_trues(t)
 end
 
 local function nucleus(t)
+	t = techage.tbl_filter(t, function(v, k, t) return type(v) == "table" end)
 	if #t == 4 then
 		if vector.equals(t[1], t[2]) and vector.equals(t[3], t[4]) then
 			return true
@@ -69,7 +70,7 @@ sched.register(tSched, CALL_RATE1, 1, function(pos, outdir)
 		local resp = control.request(pos, Cable, outdir, "con", "test_plasma")
 		local cnt = count_trues(resp)
 		if cnt ~= EXPECTED_PLASMA_NUM then
-			return S("Tokamak shape error")
+			return S("Plasma ring shape error")
 		end
 		return true
 	end)
@@ -98,11 +99,6 @@ sched.register(tSched, CALL_RATE2, 4, function(pos, outdir)
 		return true
 	end)
 
---	function(pos, outdir)
---		local resp = control.request(pos, Cable, outdir, "con", "no_gas")
---		return "no_gas: " .. concentrate(resp)
---	end,
-
 local function can_start(pos, nvm)
 	local outdir = networks.side_to_outdir(pos, "L")
 	if not power.power_available(pos, Cable, outdir) then
@@ -269,6 +265,12 @@ minetest.register_node("techage:ta5_fr_controller_act", {
 	sounds = default.node_sound_metal_defaults(),
 })
 
+techage.register_node({"techage:ta5_fr_controller_pas", "techage:ta5_fr_controller_act"}, {
+	on_recv_message = function(pos, src, topic, payload)
+		return State:on_receive_message(pos, topic, payload)
+	end,
+})
+
 power.register_nodes({"techage:ta5_fr_controller_pas", "techage:ta5_fr_controller_act"}, Cable, "con", {"L", "R"})
 
 minetest.register_craft({
@@ -279,3 +281,4 @@ minetest.register_craft({
 		{'default:steel_ingot', 'default:diamond', 'techage:aluminum'},
 	},
 })
+
diff --git a/locale/techage.de.tr b/locale/techage.de.tr
index d9cd4d5..b59c664 100644
--- a/locale/techage.de.tr
+++ b/locale/techage.de.tr
@@ -242,9 +242,9 @@ Tube Concentrator=Röhren Konzentrator
 Cooling failed=Kühlung ausgefallen
 Magnet detection error@n(@1% found / 100% expected)=Magneterkennungsfehler@n(@1% erkannt / 100% erwartet)
 Nucleus detection error=Kern nicht erkannt
+Plasma ring shape error=Formfehler des Plasmarings
 Shell shape error@n(@1% found / 100% expected)=Hüllenformfehler@n(@1% erkannt / 100% erwartet)
 TA5 Fusion Reactor Controller=TA5 Fusionsreaktor Controller
-Tokamak shape error=Tokamakformfehler
 
 ### controller.lua ###
 ### heatexchanger2.lua ###
diff --git a/locale/template.txt b/locale/template.txt
index bb17203..63384bd 100644
--- a/locale/template.txt
+++ b/locale/template.txt
@@ -242,9 +242,9 @@ Tube Concentrator=
 Cooling failed=
 Magnet detection error@n(@1% found / 100% expected)=
 Nucleus detection error=
+Plasma ring shape error=
 Shell shape error@n(@1% found / 100% expected)=
 TA5 Fusion Reactor Controller=
-Tokamak shape error=
 
 ### controller.lua ###
 ### heatexchanger2.lua ###
diff --git a/teleport/teleport_pipe.lua b/teleport/teleport_pipe.lua
index 10b0454..7196ea6 100644
--- a/teleport/teleport_pipe.lua
+++ b/teleport/teleport_pipe.lua
@@ -161,19 +161,21 @@ liquid.register_nodes({"techage:ta5_tele_pipe"}, Pipe, "tank", {"L"}, {
 		nvm.oil_amount = nvm.oil_amount or 0
 		if not blocked and techage.is_operational(nvm) then
 			local rmt_pos = teleport.get_remote_pos(pos)
-			local rmt_nvm = techage.get_nvm(rmt_pos)
-			if techage.is_operational(rmt_nvm) then
-				local pipe_dir = M(rmt_pos):get_int("pipe_dir")
-				blocked = true
-				local leftover = liquid.put(rmt_pos, Pipe, pipe_dir, name, amount)
-				blocked = false
-				if leftover < amount then
-					State:keep_running(pos, nvm, COUNTDOWN_TICKS)
-					State:keep_running(rmt_pos, rmt_nvm, COUNTDOWN_TICKS)
+			if rmt_pos then
+				local rmt_nvm = techage.get_nvm(rmt_pos)
+				if techage.is_operational(rmt_nvm) then
+					local pipe_dir = M(rmt_pos):get_int("pipe_dir")
+					blocked = true
+					local leftover = liquid.put(rmt_pos, Pipe, pipe_dir, name, amount)
+					blocked = false
+					if leftover < amount then
+						State:keep_running(pos, nvm, COUNTDOWN_TICKS)
+						State:keep_running(rmt_pos, rmt_nvm, COUNTDOWN_TICKS)
+					end
+					return leftover
+				else
+					State:blocked(pos, nvm, S("Remote block error"))
 				end
-				return leftover
-			else
-				State:blocked(pos, nvm, S("Remote block error"))
 			end
 		end
 		return amount
diff --git a/wind_turbine/pillar.lua b/wind_turbine/pillar.lua
index 11551d2..31c83b9 100644
--- a/wind_turbine/pillar.lua
+++ b/wind_turbine/pillar.lua
@@ -21,10 +21,14 @@ minetest.register_node("techage:pillar", {
 	mesh = "techage_cylinder_07.obj",
 	selection_box = {
 		type = "fixed",
-		fixed = {-8/32, -16/32, -8/32, 8/32, 16/32, 8/32},
+		fixed = {-10/32, -16/32, -10/32, 10/32, 16/32, 10/32},
+	},
+	collision_box = {
+		type = "fixed",
+		fixed = {-4/32, -16/32, -4/32, 4/32, 16/32, 4/32},
 	},
 	climbable = true,
-	walkable = false,
+	walkable = true,
 	paramtype = "light",
 	backface_culling = true,
 	groups = {cracky=1},