So I went out again Sunday and had the same results, no ejections.
I broke the 12 down, checked for "new" bare metal areas, nothing caught my eye as out of place.
Ran the bolt back and forth by itself on the rails. The rails are a little misaligned where the frame of the receiver attaches to the chamber/barrel. I don't think it would be enough to cause 0 ejections.
Added the bolt support to the bolt and ran it back and forth, did not notice anything new to the "action".
Installed spring and cover, operated several times again, spring is tight but operational. I also loaded a sp