I goofed. I didn't have any good bits for my die grinder, and didn't want to look for the round file. I used a plasma cutter, made the hole too big. Now I have to use an extra washer to mount it. Also, to get the brake lines on, I need to take the backing plate off, to give more room. then when I put it back on, it would bend in place naturally. Not much room for a wrench when bleeding the brakes.