Thanks for your answer Tom. Interesting to know there¡¯s a way to order custom tires. Fortunately I don¡¯t have any tracking problems with either my Trimaster or 1/2¡± Dimaster blades on the flat tires. I should have been clearer. I asked the question because I¡¯m trying to improve the quality of cut. It¡¯s pretty good, but I¡¯ve seen the veneers Jim gets with the same saw and will admit to a bit of envy. I too shim the fence a bit but this thread has me wondering whether my blade setup is optimum. Other than centering to the back of the gullet, I more or less follow the Snodgrass approach. He claims there¡¯s no such thing as drift as do others. Not sure I buy it but am retaining an open mind. If there¡¯s a way to get better cuts without tweaking the fence, I¡¯d love to. I¡¯m still interested in thoughts about blade centering if anybody has any.?