So this past race weekend I was having issues with my engine stalling out and running rough. The engine would run good (13,000 RPM’s) up until it got close to ideal temperature 375*F then it would start bogging down cutting out and eventually dying. I was running new fuel from the track pump that day. Any ideas on what could be causing this? I have a lot of support from the experienced guys at the track but we just ran out of track time on race day to diagnose the cause of the problem. my plan is to start with rebuilding and cleaning the carb, New spark plug and see what happens unless you guys have some other advice.