So i got my polisher through the post (UDM model 1000) and gave it a try out on my mums ming blue a3 with the big key scratch up the side. i just cleaned the wing/arch for starters and dried it off then went to work with the polisher. I used the sfx-1 pad along with the sfx-1 wax. i worked the panel all over for about 45mins to an hours and it removed about 8" of the scratch so i carryed on working at the scratch and then i looked at the pad and the wax was turning blue and ime guessing its paint thats being removed??? Then where the curve of the arch is just under the indicator there was a small patch of paint about the size of a golf ball which was knowtisably lighter than the surounding paint and ime worryed as to what/why it is?? and i dont want to carry on working at the scratch if ime going to wear away at the paint and have a huge patch thats a totally different colour?? aint got any pics of it sadly as i carried on working the panel with the final stage pad and then the mark wasnt visible at all???