Remove drop_item, drop_item_v, put_in_hands_or_del

code/modules/research/destructive_analyzer.dm

@@ -43,12 +43,11 @@ Note: Must be placed within 3 tiles of the R&D Console
 		if (temp_tech.len == 0)
 			to_chat(user, "<span class='warning'>You cannot deconstruct this item!</span>")
 			return
-		if(!user.drop_item())
+		if(!user.transferItemToLoc(O, src))
 			to_chat(user, "<span class='warning'>\The [O] is stuck to your hand, you cannot put it in the [src.name]!</span>")
 			return
 		busy = TRUE
 		loaded_item = O
-		O.forceMove(src)
 		to_chat(user, "<span class='notice'>You add the [O.name] to the [src.name]!</span>")
 		flick("d_analyzer_la", src)
 		addtimer(CALLBACK(src, .proc/finish_loading), 10)

code/modules/research/experimentor.dm

@@ -122,10 +122,9 @@
 		if (temp_tech.len == 0)
 			to_chat(user, "<span class='warning'>You cannot experiment on this item!</span>")
 			return
-		if(!user.drop_item())
+		if(!user.transferItemToLoc(O, src))
 			return
 		loaded_item = O
-		O.loc = src
 		to_chat(user, "<span class='notice'>You add the [O.name] to the machine.</span>")
 		flick("h_lathe_load", src)
 

code/modules/research/rdconsole.dm

@@ -127,9 +127,8 @@ won't update every console in existence) but it's more of a hassle to do. Also,
 		else
 			to_chat(user, "<span class='danger'>Machine cannot accept disks in that format.</span>")
 			return
-		if(!user.drop_item())
+		if(!user.transferItemToLoc(D, src))
 			return
-		D.loc = src
 		to_chat(user, "<span class='notice'>You add the disk to the machine!</span>")
 	else if(!(linked_destroy && linked_destroy.busy) && !(linked_lathe && linked_lathe.busy) && !(linked_imprinter && linked_imprinter.busy))
 		. = ..()

code/modules/research/xenobiology/xenobio_camera.dm

@@ -70,7 +70,6 @@
 	if(istype(O, /obj/item/reagent_containers/food/snacks/monkeycube))
 		monkeys++
 		to_chat(user, "<span class='notice'>You feed [O] to [src]. It now has [monkeys] monkey cubes stored.</span>")
-		user.drop_item()
 		qdel(O)
 		return
 	else if(istype(O, /obj/item/storage/bag))