i finally got the blaster together and rode it today for a few miles on blacktop and started hearing a grinding/squeeking noise from the rear so i stop and looked at the carrier and noticed that something had been rubbing and i guess it is the sprocket?? but the axle and everything back there was extremely hot and it had a place wore on the carrier where the locknuts are and the axle will move up and down and side to side and when you role it by hand the rear end locks up someone please help!!!!!!!!!!!!!!!!!!