The biggest problems I've had with are the screws. The steal they use for the stock screw sucks and strips really ez. Hardcore Racing make a Titanium screw set that replaces all the screws with Ti. They are much stronger and lighter. Also, the pillow balls are that same crappy soft steel. I cliped the side of a curb one day and snaped it right off. Hardcore and Team Associated make Titanium pillow balls for this set. The Hardcores come in different colors which can be fun, but the Team Associated are cheaper.