the kit was put on a bout a month ago, so i dont think the piston or cylinder are worn. i use racing quality 2-stroke oil. The only reason i think its the pipe is that it did the same thing once before, when the pipe leaked. however, as far as i can tell, the pipe isnt leaking, and i have played with the screws on the carb and im positive it has nothing to do with the mixture.
RE: It's not the pipe!
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