So I was polishing my 2013 WRX's front bumper yesterday with my Portal Cable, 4" orange pad and Adams correcting polish. When I wiped the polish away I noticed that the edge of my bumper was burnt through. Now I had the bumper repainted 4 months ago do to an unfortunate bottoming out incident, so I am wondering if the body shop cut some corners and did not put enough clear or color down. I'm pretty shocked that a DA on a speed setting 4 with 4" pad could do this. I took it back to the body shop today and they agreed to repaint it, but I'm wondering how this could have happened so easily? I was moving the machine so as not to build up heat in any one are. Interested to hear some opinions.