Sometimes people do glue the leather onto the pad after gluing the screws through the bottom of the pad. Then they bore out the screw holes in the stock and epoxy the screws into the stock. Until it dries, they clamp the pad on by running a clamp between the end of the receiver and the end of the pad. It could have been put on in this manner. This means that you are going to have to tear it off the best way you can. So, you might want to check it closely. Good luck.