Anyone use a pneumatic D/A in place of the popular PC? The way I understand, they are essentially the same thing. I am a beginner and just bought a rotary polisher (DW849) and would like to use an ingersoll rand D/A that I use for bodywork for detailing (since I haven't done much bodywork lately). Does anyone have any recommendations as far as back up pads/pads to use with this combo?