I just installed metalcloak fenders on my LJ. When I went to remove the lower flares that are on the rocker panel the nuts were just spinning. It was already late and I wanted to be done so I just ripped off the flare. But now the bolts are still there. Just wanna make sure there is no special technique to remove these before I cut them off. Also on both sides there is a circle with clear plastic over it. What was that for?