Shim Question

[nw tenn duckslayer]

Hey Guys! I have a quick question. I purchased a SBE II and noticed it shoots high. I have been used to shooting brownings and thought something was wrong with my gun. I took it back to the dealer and they said it was fine. I called customer service and they said it just needs to be properly shimed. So i took the stock off and pulled the shim that came on it off and it said DX on it. In the manual it shows 2 shims on it. I have shim A C Z. And the DX that came off of it. My question is the manual says the plastic DX shim is a deviation plate. Was it supposed to stay on or what. I installed the C shim. Also the manual shows a A B C Z shim and i don't have a B shim.