Hey guys, I recently bought a slightly used G2 Bakflip tonneau cover for my truck which has the factory GM bed rail protectors. I was told that the tonneau cover will work with the bed rail protectors. I've seen lots of trucks with protectors and the tonneau cover but I can't get my rails for the tonneau to clamp even and level. I have the shims on but the rail wants to tilt in towards the box when I go to tighten the clamps... Any help would be awesome!!