Thanks Dennis and Mark. This gun only has one pin right behind the top lever that goes down to screw in to the trigger box. At the back of the trigger plate there is only a wood screw that goes up in to the grip so that really can't be used to establish any dimensions when the action is outside the stock.

I will work to slowly scrape in the trigger plate depth in the stock inletting until I get the safety to have a fairly close fit. That will still leave about .025" gap between the triggers and the sears without any upward spring tension. Then install the trigger return spring.

What could possibly go wrong. Hopefully I'll have this done to bring along to class this summer and you can critique my work then.