I do have a cheekpiece available to get your head up where it needs to be on a high mounted scope. PM me if you think you need it. It looks like this.

I had luck when I wiggled the mount as I was tightening the mounting screw. Made it more consistent when taking off and putting on. Obviously, make sure the screw is tight. You can also glass bed the mount, but it gets bedding on the carry handle, which you may not want to do.
Fast Ed