I was reading around an saw people talking about flattening the face on their rip fence. I just measured mine and with the dial indicator set at zero at the operator end, it will wiggle between 0 and 0.004" as I run it down the length of the fence (in the stock direction). My best check of the blade to miter slot is "within the same 0.001", that is, when I mark a tooth, put the indicator against it and set to zero, the same tooth measures 0.000" at the other end (8 inches or so down the travel of the slot, I suppose I could figure out the exact length, but its been a long time since that sort of geometry was needed by me). Should I go in and try to shim this out? Most of the variations are around the 3 bolts that tie the face to the arm of the fence. Its a powermatic rip fence. Or, would I be better off getting rid of the UHMW face and making one up out of MDF or something like that? The reason that I ask is that my blades seem to "gum up" faster than I think they ought to and I notice some slight burning on most cuts.