OK, I have a question. I have been reading this thread here and there and I pulled the trigger and my wheels came today. My grit wheel is not true at all. I read the directions about truing, but I think my issue is different. My wheel is wobbling side to side, and not by a little by an 1/8" and it is not a loose bushing either. Now before anyone says it is my grinder, I have put the wheel on THREE of them and it is the same. The polishing wheel is fine. Am I right this is not supposed to be? I can understand a slight hop in the wheel but this thing gets me dizzy watching it spinning by hand.