i just got my bb 143 tb kit without the racehead in my bike. it was my understanding that the kit would not run well with the stock carb and pipe to my superprise the bike seems to start and run fine, with the stock carb, jets and exhuast. my question is how can i tell if the bike is running lean? im worried about frying my engine. when i start it and open the throttle everything seems ok from low to hi revs, everything sounds good. also does anyone know what i should set my valves too?