This weekend I removed the trigger group. The shell stop dropped free and looks okay to me. Cleaned it all up. Each time I take this shotgun apart and put it back together, ... it works a little better.
Thanks to all for the help.
"Far better it is to dare mighty things, to win glorious triumphs, even though checkered by failure, than to take rank with those poor spirits who neither enjoy much nor suffer much" Teddy Roosevelt