Make sure you release the top lever before you try this. If you haven't figured it out yet, there is a small plunger that the rib extension depresses as the gun is closed. You can push on this with a small tool and the top lever will be released to a neutral position. Then it takes much less force to align the screw hole.

I am a big fan of the wedge on a string trick and it leaves the stock intact as well as insuring you don't bugger the threads of the top lever pin. There aren't any vises or drills involved and it takes zero effort.

Rob.