Lil sucker fell out at one point and i didnt see where it came from, i just found it laying there. came out of the carb, not from a kit. its about 1/16" thick and a little over an 8th inch in diameter. its not rounded on the edges, its very square edged. can go grab it and post a pic if neccessary. plan on putting everything back together tomorrow night. Help with ID would be much appreciated.