ok my bike smokes like hell...might not be the rings but i dont no if...its been rebuilt before,the guy says it has but cant trust that...but i wanna rebuilt the top half...what all i need and if im going to do that should i go with a big bore kit , what is it 133cc or 144cc and if i do a big bore kit what all i need to bore it and...?does it need go to a machine shop?and iv got a gaket sit for stock engine proble need new gasket set for the bore kit....and if i bore it out well i need to mod anything eles....im kinda new to the dirt thanks
