You know that this is incredable. I live out by SFMM, and we had the SAME posts about the Goliath wheels. It sounds like the same problem. What SFMM did is they replaced the wheels several times, until they came upon a compound that worked. Also on S:TE, when they first ran that ride, they had normal size wheels. The heat was so great, that it had burned out it's wheels before the tower section, not a good thing.