My wife and I have been busy getting several cars ready for upcoming events. We each have a car prepared for a custom race over at rust belt and we have noticed something. I have my car sitting on hot wheels shoes and hers sits on zuru. Axles are polished and graphited, both cars are aligned and axles fixed in place. We have sent them down the test track and the zurus seem consistently faster. Has anyone had any similar results? We have a few more to build and if this is coming I will be looking more towards zuru for wheel farming in the future.