Kenc maybe on to something with that vacuum leak. I have pretty good luck using a small hose about 3 feet long and listen for leaks. With one end in your ear use the other and probe around the gasket area. First stick it in the carb so you know what listen for, then start hunting. Most likely spot will be under the intake or bottom side of the front runner. The bolts are spaced a little funny right there and don't hold to well. Keep us posted, Joe.
