SW solution? they say some tires will induce this and it is usual, degreaser will clean it they say but it really's burned into your apparent What grit sandpaper have been you using? I am anxious if you point out applying electrical sanders because that shouldn't be needed. You do http://zioniezup.fitnell.com/35334855/not-known-factual-statements-about-garage-floor-painting-contractors-28277