Hello all, first time posting, please bear with me. I just bought this grinder off of craigslist. I need some assistance from any grinder/electric motor gurus. The model number is 248-151as I believe. The grinder has a couple of issues. The first is the drive contact wheel, it is an aluminum hub that has rubber tread on it. I am assuming that this was originally glued from the factory to the hub, well it has come unglued, but the tread is in great condition, as far as I can tell. I want to get some feedback on regluing tthe tread back on or if that is not possible, to get some suggestions on replacement. The Baldor factory replacement is steep, someplaces almost twice what I paid for the grinder. Any thoughts or suggestions on this would be much welcomed. The other issue, is something is going on internally with the motor, I am hoping it is just bearings but not sure. I need some guidance in disassembling the unit to troubleshoot, if any can be provided. I will post some pictures here as soon as I can figure out how to do that.