Hey. I was reading your post about changing your harmonica style bridge to an ABR-1. I wish to do the same. I have '61 Les Paul (SG) that was changed to a Schaller harmonica type during its history and I want to change it back. Any information on layout of studs would be great. I have a few ideas to accomplish this. First, I have two other Gibson with the ABR-1, so measure and transfer. Second; seek advice!