Thanks everyone, I'm going to start tinkering with it today, but I did have a question pertaining to the warm running device, I rebuilt it the other day, but in the process the guide rod got accidentally tapped out (the wrd was froze up so i tried tapping it out). I soldered the guide rod back into the piece that sits on the spring. After reassembling it, I noticed the guide rod sits even with the opening. Is thats how its suppose to sit at room temperature? If not, how far out should the rod stick out at rest?