I had a similar experience putting the PBL flipper guard side rails on my LOTR. Mine were not as bad as those of the OP, but they were a little off. I just used a Dremel to widen the bolt hole in the cabinet that was closest to the flippers on each side, and it worked fine. I agree that the quality of the powercoat is not the best, but it's better than not having the flipper guards on there and getting a lot of wear around the buttons. I could just barely see wear starting and decided it was time to put the flipper guard rails on.