First, I cut off too much on my ears. But hey, you can't screwup anything that can't be fixed right? X) I try applying some sludge (acetone and abs) to fix it. The next morning I check the helmet and the sludge has melted my helmet around the ears! Oh Crap! So I cut that area out and after numerous thin layers of sludge and sanding, I repair it but it remains pitted with discoloration.