Brand new rebuild, reeds, carb cleaning,both coils, air cleaner. Starts fine, idles great, smokes too much. Think thats the premix though. Absolutely will not hit the powerbands!!! Any advice will be greatly appreciated!!!!!!!!!! I forgot 2 tell you its bored 60 over.

 

Plugged silencer?
Crank seals?

 

could be your gas/oil mixture causing problems also