Just picked up a 92 xt350 all original with 19k on it. It was running a little shitty so i cleaned the carb changed the oil, plug and cleaned air filter. Adjusted the air screw to 2.5 turns and it helped alot also. I was driving it and it was getting really hot and once it got so hot it started running the crap and bogging wenever the throttle is applied. Were so i go from here? I no theres not as jets available for this wierdo carb.