Mossberg 500 recoil butt pad thingy

This may seem to be knickpicking but it's rather bothersome to me. I have a Mossberg Persuader, when you throw the gun up to your shoulder, that butt recoil built in thingy is made of soft rubber like and it doesn't move around easily if you want to say, raise it up a little, friction like against your clothing...I like how my Marlin rifles butt pad (not a cushioned one), it s l i d e s easily if you want to reposition it on your shoulder...the Mossberg's seems to not allow this due to the type of rubber, any ideas? spray it with some kind of sealant something or other?