Have you got fine measuring instruments? Like a good caliper and/ or micrometer?
Maybe when the levers clamp down the mount is getting out of centerline. Measure how parralell the surface that mounts to the rifle is. Other than that, maybe lap the rings.
Thanks for the response, but you are speaking greek to me. I have never mounted a scope myself, always had it done where I bought the scope. This scope I bought online. My rifle is a Browning BAR Hog Stalker and has the mounting rail already mounted. So, I just put the scope in the rings and attached to the rail. Sounds like it's not as simple as I thought it was?