Looking for recommendations on a better wheel (or wheels) for my chain grinder. I use Stihl 33RSC chain (or Carlton equivalent) on the big saws and PMC chain on the pico saw. I'm tired of the slow pink stone wheels that came with this cheap grinder. Also would be interested in hearing from anyone who uses a grinder to set depth gauges. I've tried it with limited success, and am thinking of going back to just manually filing the depth gauges.