I cut the stock back to 1/8” shy of the filler block. I had purchased a Pachmayr Decelerator 750 B to replace the factory pad. Guess I didn’t need it. Once I cut the stock I figured I would see how the factory pad still fit. Other than removing about a 1/16” of material at the toe and cleaning up the sides, it’s a really nice fit. I haven’t tried sanding it down yet, but I’ll let you all know how it works out.