Evan

Hello All, I own a 1995 Yamaha Banshee with the following mods: Keihin 34mm carbs, T5 full exhaust, cool head (stock bore Weisco pistons) and a Tusk heavy duty clutch kit, I may be missing a thing or two. The banshee runs great, and does so for about 30 mins, then the bike loses power, and the left pipe stops smoking. I have attempted to change the plugs does nothing. However, if I let it sit without running the motor long enough the bike regains the power on both cylinders (almost as if the carbs fill back up with gas, etc) I believe it to be a jetting problem. Here is the question, based on the mods which also includes K&N air pods what jet and main pilot size should I be using and or is it another problem, btw the cylinder head only has about two hours on it and the pistons only have a few hours on them. I should also add that I live in philadelphia Pennsylvania. Please help.