I have a problem! It was so hard to get the crank out of the motor that the puller mushroomed the end of it...my boyfriend took it to the machine shop and fixed it but when I brought it to a motorcycle shop they assembled but couldn't true it up... he is gonna try to check it out, fix it, and true it himself... is that very hard to do? If I have to buy a new one is it possible to buy only that one side? I got my parts back from 4 stroke tech and I can't wait to ride this thing...I keep running into more problems..any input would help!!!