Yep, that's a common problem with one brand of rails.
What I do is ignore the hole in the rail and align them where they should be based on the trunnion lugs and upper rails. After they are welded in I use a file or dremel to match the hole in the receiver. Basically cutting away half a hole of material.
What I do is ignore the hole in the rail and align them where they should be based on the trunnion lugs and upper rails. After they are welded in I use a file or dremel to match the hole in the receiver. Basically cutting away half a hole of material.