I just bought this bike in July, it’s been a great bike, runs strong and always starts 1-3 kicks hot or cold. My 110lb 13 yr old has no trouble starting it. My only complaint, it will puff some white smoke at startup for the first minute. Valves were checked and are in spec, doesn’t make any noise. My questions. Is the puffing normal? I’m going to put a piston in it over the winter and have the head inspected for good measure. Should I just put a crank in it just in case while it’s apart? Should I even touch it at all?