I bought a used 77 MKII in 30.06 about a year and a half ago. I love the way it shoots and wouldn't trade it for anything. However, when I clean it, the only way I can remove the bolt is to remove the screw holding the bolt stop and the screw. I cannot see how that bolt stop is supposed to move. I emailed Ruger with this question and they replied I might be missing some parts fromk the bolt stop. they sent me the small parts, but the bolt stop is not missing any parts. The manual says to remove the bolt, "Open bolt and pull to the rear while at the same time pivioting open the bolt stop." I cannot get the bolt stop to move in any direction. Can anyone help me with this?