Hi Tom, welcome to the forum. Were you able to get your bike bike rolling the way it should? Check your alighnment with the engine and also make sure that your sprocket is centered on the wheel. Enjoy the ride...Kelly

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I'm racin' Spitfire, turnin', poppin' wheelies, burnin' evil chasin' pop,pop, pop,pop,pop.... (The Pixies-Tony's theme)