borg updates

code/game/objects/items/robot/robot_upgrades.dm

@@ -169,6 +169,8 @@
 	else
 		for(var/obj/item/weapon/pickaxe/drill/cyborg/D in R.module.modules)
 			qdel(D)
+		for(var/obj/item/weapon/shovel/S in R.module.modules)
+			qdel(S)
 		R.module.modules += new /obj/item/weapon/pickaxe/drill/diamonddrill(src)
 		R.module.rebuild()
 		return 1

code/modules/mob/living/silicon/robot/robot_modules.dm

@@ -230,13 +230,6 @@
 	modules += new /obj/item/weapon/gun/energy/kinetic_accelerator(src)
 	fix_modules()
 
-/obj/item/weapon/robot_module/miner/on_emag()
-	..()
-	for(var/obj/item/weapon/pickaxe/drill/cyborg/D in modules)
-		qdel(D)
-	modules += new /obj/item/weapon/pickaxe/drill/diamonddrill(src)
-	rebuild()
-
 
 /obj/item/weapon/robot_module/syndicate
 	name = "syndicate robot module"

code/modules/research/designs/mechfabricator_designs.dm

@@ -661,7 +661,7 @@
 	build_type = MECHFAB
 	build_path = /obj/item/borg/upgrade/ddrill
 	req_tech = list("engineering" = 5, "materials" = 5)
-	materials = list("$metal"=10000, "$diamond"=8000)
+	materials = list("$metal"=10000, "$diamond"=3750)
 	construction_time = 120
 	category = list("Cyborg Upgrade Modules")