Thanks for the quick replies. I wasn't sure if any disk will be fine. Someone told me that he used a 20 grit, and he noticed a big difference between different types. Since the previous owner has done it before, I'm sure the pads on there were probably picked based on the fact that he would grind his rims. I do know grinding them too often will wear them away until they're too thin, but hopefully if I learn to do it the right way that won't be too much of an issue. Someone might be giving me a disk that he thought worked best on his Monty, so maybe this week I'll be able to get some help with making sure I do it correctly from someone that's been riding for like 11 years. edit: I cannot see the video until I am made a "full" user or whatever. Is there somewhere else on the net I can find this video?