My luthier needed to raise my action to accomadate a set up for 13/56 strings. This required him to shim the saddle. He put the nylon shim between the bottom of the saddle slot and the under saddle pick up of my Stage Pro Anthem. There is a noticable reduction in volume and sensitivity from the under saddle pick up. I am thinking the shim should have gone between the pick up and the saddle. Which is correct. Would I get a better result in just purchasing a new Tusq saddle? Thanks in advance.