Firstly, i don't have a grind and don't know much about it but I'll have a crack at it. This is an instructional vid from OTN VID which will show you how to grind it... As far as i know any metal grinding grinding disk will be fine, i seem to remember people saying 45 degrees is a good angle. Kool stop reds? They might get mullered from a grind, you'll need a hard pad for greatest life span. Have a look on tarty if you're gonna buy some new pads for a grind, they explain what the pad goes best on. Be careful, wear safety equipment and don't grind it loads or your rim will get mega weak.