O.k. I admit I am new to the bike and racing and have some questions on the whole plug fouling and jetting area. First, going up on the needle seemed to decrease the soot on my plug and help throttle response. Second I am thinking of going to a 168 main jet to head in the same direction (leaner). Additionally if the bike doesn't bog out of corners do I need the accel pump mod. on a 01 426 that was remapped by the dealer to help with fouling, it also has a new cdi and carb. any help would be appriciated.