Happy to help George.
Another good thread
https://www.trapshooters.com/threads/ithaca-flues-sbt-evolution-of-the-top-bolting-mechanism.861469/

and a fun thread
https://www.trapshooters.com/threads/ithaca-wins-ithaca-wins.894978/

You might check around the push-button FE release escutcheon for cracks in the wood, and consider reinforcing the wood with some ultra-thin cyanoacrylate
I had a 4E and Victory Grade Flues SBTs both with cracks.

You and your family have a blessed Resurrection Day.