I was going to order a Schaller 463 bridge (roller bridge) for my bass. I have read that people have put these on their Fender basses with no problem. But it doesn't look like it will fit on my bass, an American Deluxe J. I downloaded a diagram of the bridge and it says that the screw holes (is that what they're called?) are 25.5 mm apart, but on my bass they seem to be 20 mm apart. Am I measuring something wrong, or will this bridge work without having to put any new holes in the bass?