i have hooper f8 and d&d f8-f9 pipes 2 degree key what size jets should i run? i have 510n in there now but have serious lean spot on bottom but fine wot. some one said run f5 needles? just wondering if any one else has dealt with this. by the way it is an 05 f7 got bike man primary clutch kit any help clutching the new mods would be apreciated. the sled was a bullet last year.