The only problem exists is this- when I try to start it when it is hot, it appears the carb is vapor locked and will not allow fuel to enter carb while it is hot, preventing it from starting. If I wait about 5 minutes it will fire up no problem. I've never had an engine do this before, and it sucked this weekend when I flamed out during a 30 minute main on a pit stop. Should have been able to fire it up in a few seconds, but it would not fire due to this problem and I was out of contention!! After waiting 5 minutes it fired right up!!
Read this trick somewhere and it actually worked. When the carb is hot you need to cool it fast...Pour some fuel on the carb body and it helps. Another trick is with a can of compressed air. You can just blow the air on the carb body and it'll help cool it as well. Yes ultimately you should try to prevent it by vapor locking, but when it happens during a main this will help you get started up quicker. Good luck