Hello. I recently detail stripped a 1972 Winchester 94 30-30. This bluing was completely gone, so I wanted to re blue. I marked all the parts and screws. I also drew a diagram of where they all went. My problem is when I went to reinstall the two internal rails that the bolt is guided on, I noticed the right rail has a slight curve. Every time I attempt to install this rail it curves and pivots on the assembly screw. I can not get this rail to sit close enough to the receiver for the bolt to slide on. The bolt keeps hitting this rail because of the curve. I fired the gun and know it was working before I took it apart. My question is this piece suppose to have a curve? And if so, what am I doing wrong. Thank for any help you can provide.