I run a two bros 88 kit and lately i have no power whatsoever. It cuts out and it sputters and I can't even ride it because it does not rev past like 2000. I have pulled apart the carb and found no obstructions in it, but when I pulled it apart it ran normally for about 300 feet. I am at sea level and I was thinking if I had it jetted wrong? I have not even changed the oem settings on the carb. Please someone tell me what's wrong!!!!!! I want to ride my fiddy.