Eddie,
There is a product call Cheekeze which is used on shotgun stocks to raise the comb height and also provide a little recoil relief to the cheek weld area. It is a proprietary rubber pad with an adhesive backing and comes in different thickness and can be cut to fit for any application.
I have used them on a couple of shotgun stocks and they do work. They are realatively easy to remove and the adhesive hasn't left a mark on the wood finish on the two stocks I have taken them off from. The company that makes them is the one that makes the Kickeze recoil pads.
Don't know if this is what you are looking for, but it may work for your application.