Just be careful and don't do what I did when I was shaving off the molded on tools with a flat x-acto blade!! In at the knuckle and out the side of my thumb... [:@]

On your question though, I had the same problem and wasted a few when making the brackets for the Tiger's turret stowage bin. I just picked the best, and glued them down with the flatest side down and if they were angled on the top just ran a piece of sandpaper over them to flatten them out.