Ok so I bought a hemi predator, I put a pipe and a 22 mikuni carb kit on it, the bike takes off great and pulls really good but it tops out at about 45-50 then it just dies and won't pull anymore, the jets that are in my carb are 130 main and 12.5 piolet, also the carb is running lean, and my gearing is 12/62, what do uou guys think it is? Could it be my valves floating