diff --git a/technic/deployer.lua b/technic/deployer.lua
index aa5133b..9fbef07 100644
--- a/technic/deployer.lua
+++ b/technic/deployer.lua
@@ -19,20 +19,23 @@ deployer_signal_on = function(pos, node)
 	if node.param2==0 then pos1.z=pos1.z-1 end
 
 	if node.name == "technic:deployer_off" then
-		hacky_swap_node(pos,"technic:deployer_on")
-		nodeupdate(pos)
-		local meta = minetest.env:get_meta(pos);
-		local inv = meta:get_inventory()
-		local i=0
-		for _,stack in ipairs(inv:get_list("main")) do
-		i=i+1
-		if stack:get_name() ~=nil then 
-			node1={name=stack:get_name(), param1=0, param2=node.param2}
-			minetest.env:place_node(pos1,node1)
-			stack:take_item(1);
-			inv:set_stack("main", i, stack)
-			return
+		local node1=minetest.env:get_node(pos1)
+		if node1.name == "air" then 
+			hacky_swap_node(pos,"technic:deployer_on")
+			nodeupdate(pos)
+			local meta = minetest.env:get_meta(pos);
+			local inv = meta:get_inventory()
+			local i=0
+			for _,stack in ipairs(inv:get_list("main")) do
+			i=i+1
+			if stack:get_name() ~=nil and minetest.registered_nodes[stack:get_name()]~=nil then 
+				node1={name=stack:get_name(), param1=0, param2=node.param2}
+				minetest.env:place_node(pos1,node1)
+				stack:take_item(1);
+				inv:set_stack("main", i, stack)
+				return
 			end
+		end
 	end
 	end
 end
@@ -93,8 +96,18 @@ minetest.register_node("technic:deployer_on", {
 			"technic_deployer_back.png","technic_deployer_front_on.png"},
 	is_ground_content = true,
 	paramtype2 = "facedir",
-	tubelike=1,
 	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2, mesecon = 2,tubedevice=1, tubedevice_receiver=1,not_in_creative_inventory=1},
 	mesecons = {effector={action_off=deployer_signal_off}},
+		tube={insert_object=function(pos,node,stack,direction)
+			local meta=minetest.env:get_meta(pos)
+			local inv=meta:get_inventory()
+			return inv:add_item("main",stack)
+		end,
+		can_insert=function(pos,node,stack,direction)
+			local meta=minetest.env:get_meta(pos)
+			local inv=meta:get_inventory()
+			return inv:room_for_item("main",stack)
+		end,
+		input_inventory="main"},
 	sounds = default.node_sound_stone_defaults(),
 })