So I've been shooting my Sage EBR m1a a couple times and have noticed that the screw on the left hand side of the op rod guide does not go in all the way. I remember having a tought time installing the guide onto the barrel. The screw seems to bind up and not go in all the way were as the one on the right does. Could this be because the guide is not even, it looks like its even. The op rod passes through the guide good and does not show any distinctive wear. I attached a picture of the screw in question. Should I get a small washer and place it under the screw? I want my rifle to be as accurate as possible and wondering if this is a problem I should be worried about.