HELP - Ejector problem?

[BRDHNTR]

Was at the range today shooting my first round of trap with my 12 ga. DHE. After several rounds fired, the gun would not break open fully, nor close (as best I recall). I was able to remove the fore end from the barrels and separate the barrels from the frame. Put the barrels back on the frame and closed the breech with no issue but fore end would not go back on.

The extractors/ejectors that are housed inside the barrels slide fine. I'm thinking that there's something amiss with the ejector mechanism inside the fore end.

Have taken pictures of the parts, just in case some one more knowledgeable than me may have some insight. Any thoughts/suggestions?