Question really for SD Codefree users (or any related systems). Some time back I thought the spring in the stabber/lancet assembly was weakening. I couldn't get a new one from Home Health so I replaced the whole kit. Now I find the spring won't release and I'm facing replacing the kit, monitor and all, for a second time. Feel free to chip in with anything helpful, but I'd like to know how much use do people get out of theirs, or is there another way to buy just the lancet holder?