Flyin40 I have tried 3 of the Cmore railways and they all sit the same. They all lean to one side. I forget which side. Tried the C More setup on an AR15 flattop and it was perfect. The Marvel Rail doesn't come up high enough to touch the bottom of the CMore mount. CMore says that is the only mount they make. I tried putting shims between the mount and rail and that worked but looked pretty hokey so I took it off.
Bill