[Tommy]

Snakeeyes (spelled the hard way),
The fact that you are asking us strangers about your engine leads me to believe that either your car builder can't answer your questions, or you're not entirely confident in his abilities. Given that these old engines aren't very common anymore, I think you'd do well to put your trust in someone with a good reputation for working on them. If you do that, you won't need to come here seeking input on what sounds to me like mostly random speculation about your engine. Most of us enjoy trying to troubleshoot other peoples engines and a few of us (not including me) actually know what we're talking about. But I don't think that is the best course for you. Trying to analyze and fix your engine on the cheap may turn out to be the most expensive way to do it.