I started using the Griffin and Howe repro Silvers pads in 1986 and have never had a bad one. They are not the same as other Silvers repros. However, they are big with big plugs. They won't work on a .410 Parker. The G&H pad comes with a steel washer in the hole. If you use the right large flat bottom screws, the pad should not rise. If the washers are not as big as the plugs, you should substitute washers that are as big as the plugs.