I took mine apart to check the whole car for loose parts. I'm a little tired of this thing falling apart. I've got that small screw loctite and will be quite liberal with it. The clutch housing on mine is a total POS . There is no way to make mine sit straight so the gears mesh properly with out just jambing them together. The tips of the gears are the only thing touching and the clutch housing is about worn out from the plastic wearing on it. I also looked at the two speed , the little weight that comes out to hit second seems stuck. No matter what you do it does not move. If I can I might try to put the Volcano gears in mine then go with the bugger tires. If not , I'll go single speed from the XL, there is no way this will hold up the way the parts are made.