it has pipe over sized piston and over sized carb. but i think the carb is making a problem. it dosnt have power like i though it would. if the carb is to big would it make it where the bike dasnt want to get to full power

 

did u jet the carb lately, clean the air filter, some times getting a new spark plug also helps surprisingly. if she still dont run right let me know.

 

id do a compression test on it first