Revert "12/21 modernizations from TG live"

code/modules/mob/living/ventcrawling.dm

@@ -53,17 +53,17 @@ var/list/ventcrawl_machinery = list(/obj/machinery/atmospherics/components/unary
 			if(!client)
 				return
 
-			if(iscarbon(src) && ventcrawler < 2)//It must have atleast been 1 to get this far
-				var/failed = 0
-				var/list/items_list = get_equipped_items()
-				if(items_list.len)
-					failed = 1
-				for(var/obj/item/I in held_items)
-					failed = 1
-					break
-				if(failed)
-					src << "<span class='warning'>You can't crawl around in the ventilation ducts with items!</span>"
-					return
+			if(iscarbon(src) && contents.len && ventcrawler < 2)//It must have atleast been 1 to get this far
+				for(var/obj/item/I in contents)
+					var/failed = 0
+					if(istype(I, /obj/item/weapon/implant))
+						continue
+					else
+						failed++
+
+					if(failed)
+						src << "<span class='warning'>You can't crawl around in the ventilation ducts with items!</span>"
+						return
 
 			visible_message("<span class='notice'>[src] scrambles into the ventilation ducts!</span>","<span class='notice'>You climb into the ventilation ducts.</span>")
 			forceMove(vent_found)
@@ -93,7 +93,7 @@ var/list/ventcrawl_machinery = list(/obj/machinery/atmospherics/components/unary
 		var/obj/machinery/atmospherics/A = X //all elements in totalMembers are necessarily of this type.
 		if(!A.pipe_vision_img)
 			A.pipe_vision_img = image(A, A.loc, layer = ABOVE_HUD_LAYER, dir = A.dir)
-			A.pipe_vision_img.plane = ABOVE_HUD_PLANE
+			//20 for being above darkness
 		pipes_shown += A.pipe_vision_img
 		if(client)
 			client.images += A.pipe_vision_img