Hi nebp40man,

Welcome to the thread, hope you are finding it interesting.

I think the only thing that will cause an engine to continue to run with the carb fully closed is an air leak, usually around the base of the carb, there is a post here somewhere talking about sealing the carb mounts and barrel - you may want to take a look. Perhaps someone already knows where the post is, I'll take a look as well.

Fly4Fun,

Wayne