i took it apart to remove the governor. And while I had everything off I decided to pull the head. it was spitting and sputtering at wot after 10-15 laps on a 1/10th mile oval track. The previous owner installed a .045 emulsion tube, .035 jet , and a larger low speed jet. And it is just the stock torch plug that comes in them. Gonna do a leak test tomorrow. The oil had some gas in it as well. It seems as if I’m chasing a chain of problems.