A quick note regarding the discussions about replacing the butt plate spacer. WARNING - Be very carfull when removing the plate. This black plastic/bakelite material is very easy to chip, especially when it has some age on it. I found out the hard way when I did this repair to my 336. I found that the head of the screws were somewhat "captured" in the recesses of the plate. When I pushed them out to clean up the plate and screws, the edges of the screw hole chipped out on one hole

. Guess the plate material had maybe shrunk around the screw head just enough to grab as I poped out the screw, pulling a piece of that plastic off with it. So watch out there and go EASY pulling out the screws from the plate.