Okay, had the chance to rip the top end off and i have tottally found out what happened..... I'm getting pics of it up here right now. will have them in the next post...but, I wanna know what it takes to make my stock cylinder a big bore. and have the carb adjusted right....With my Toomey full exhaust, I dont exactly know what to get.... I know I will need a LA Sleeve 240 Big Bore, but carb size, i wouldnt have a clue with my open airbox with a stock type UNI Filter....I wanna know what I need to get if I wanna make my blaster a big bore for the dunes....(arizona&california)