I have my 63 running pretty well after setting the valves and tightening all the back plate & carb bolts.

But if I let it idle for a while it loads up. If I shut it down it continues to pump fuel into the carb.

Does this sound like the regulator is sticking, or is it a carb issue?

Please help. I really don't want to send it in. In Minnesota we have a short flying season.

Chuck