ok so I bought a blaster with a stock header and an fmf silencer and boyseen reeds. I just had to bore it .80 over and found out its got quite a bit of exhaust and intake porting. also head work. I got a reed spacer of a guy for free so I put that on there too. I have no air box lid and a uni dual stage filter. I just put it all together with the stock carb and a 300 main jet and a 35 pilot. my buddy who fixed it all and rebuilt it for me said when he was just cruising breaking it in, it was running fat, but we checked the plug and its running lean. also it would bog at times and we he was getting on it and pulled in the clutch it revved up like it was wide open. so im guessing it needs a bigger carb, more air and fuel. if anyone can help it will be much appreciated.