The Griffin and Howe repro Silver screws are drilled at 3 5/16" apart. I have used a round file to bring them closer together for a gun that originally had a Hawkins pad on it. As I recall, the Hawkins is 3 1/8" screw spacing. There is plenty of room to adjust the screw spacing in the G&H pad. When you enlarge the holes lengthwise, use washers in the plug holes when installing the pad to keep it flat on the wood.