Tomorrow I'm planning on using my PC with 4 inch pads for the time. Are there any tips I need? Do I still go at 6 on the pc or do you bring it down since the pads are smaller? Also, I've had some problems with 106ff before, can anyone tell some tips on making that work as far as how much product to use and how long to work it? It really seems to splatter when I've used it before, does that mean i'm using too much?