Sorry for the delay Ted but holidays and work interference. So back to the subject. First picture is the wedge you pointed out except as you can see the screw goes through the wedge. Second picture is a screw in the table and third picture is the forend with angled screw into the wood maybe- I don't know. Below on the trigger guard 3 screws, the smallest at the base of the trigger guard. 2 additional pictures of the breech block. This is all of the visible screws.
So, would I proceed same as you outlined previously or otherwise. Also, at what point do you remove the through bolt. How about removing the forend wood. I assume this is a 2 piece stock. all info you provide is greatly appreciated.








Last image of guard screw coming through the rear tang. You can see the poor repair and an additional crack in the mortise.