I need some advise. I have an M1A Scout with EBR stock and Magpul PRS stock. I bought the ARMS #19 mount to mount my scope. The problem is I cannot get the scope far enough back to get the right eye relief. I have to push my cheek forward of the cheek piece to get the proper sight picture. I was thinking maybe a reverse cantilever mount(LaRue)? I know I'm not the first to do this. Can anyone point me in the right direction? Thanks