Experimentor Duplication Limit

code/game/objects/items/devices/transfer_valve.dm

@@ -9,6 +9,7 @@
 	var/mob/attacher = null
 	var/valve_open = 0
 	var/toggle = 1
+	origin_tech = "materials=1;engineering=1"
 
 /obj/item/device/transfer_valve/proc/process_activation(var/obj/item/device/D)
 
@@ -187,7 +188,7 @@
 			attacher_name = "[key_name_admin(attacher)]"
 
 		var/mob/mob = get_mob_by_key(src.fingerprintslast)
-		
+
 		bombers += "Bomb valve opened at [A.name] ([bombturf.x],[bombturf.y],[bombturf.z]) with [attached_device ? attached_device : "no device"], attached by [attacher_name]. Last touched by: [key_name(mob)]"
 		message_admins("Bomb valve opened at <A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[bombturf.x];Y=[bombturf.y];Z=[bombturf.z]'>[A.name] (JMP)</a> with [attached_device ? attached_device : "no device"], attached by [attacher_name]. Last touched by: [key_name_admin(mob)]")
 		log_game("Bomb valve opened at [A.name] ([bombturf.x],[bombturf.y],[bombturf.z]) with [attached_device ? attached_device : "no device"], attached by [attacher_name]. Last touched by: [key_name(mob)]")

code/modules/assembly/bomb.dm

@@ -10,6 +10,7 @@
 	var/status = 0   //0 - not readied //1 - bomb finished with welder
 	var/obj/item/device/assembly_holder/bombassembly = null   //The first part of the bomb is an assembly holder, holding an igniter+some device
 	var/obj/item/weapon/tank/bombtank = null //the second part of the bomb is a plasma tank
+	origin_tech = "materials=1;engineering=1"
 
 /obj/item/device/onetankbomb/examine(mob/user)
 	..(user)

code/modules/research/experimentor.dm

@@ -219,6 +219,7 @@
 			--cloneCount
 			if(cloneCount == 0)
 				cloneMode = FALSE
+			return
 		var/turf/dropturf = get_turf(pick(view(1,src)))
 		if(!dropturf) //Failsafe to prevent the object being lost in the void forever.
 			dropturf = get_turf(src)
@@ -492,7 +493,7 @@
 		ejectItem()
 
 	//Global reactions
-	
+
 	if(prob(EFFECT_PROB_VERYLOW) && prob(13))
 		visible_message("<span class='warning'>[src] improves [exp_on], drawing the life essence of those nearby!</span>")
 		for(var/mob/living/m in view(4,src))
@@ -504,7 +505,7 @@
 			reqs[T] = reqs[T] + 1
 		exp_on.origin_tech = list2params(reqs)
 		investigate_log("Experimentor has set the origin tech of [exp_on] to [exp_on.origin_tech]", "experimentor")
-	
+
 	if(prob(EFFECT_PROB_VERYLOW-badThingCoeff) && prob(87))
 		var/globalMalf = rand(1,87)
 		if(globalMalf < 15)