Welcome John.
Short to-the-point thoughts:
Fox guns are not hard to tighten. I've had 2 done for not a lot of money. Unfortunately no Fox specialists near you, but someone might send a PM with a recommendation. ANY > 100 year old gun certainly deserves an internal check and clean, and check for cracks at the head of the stock.
Please be sure the reblue was a classic rust blue and not hot caustic salts.
Also, shiny bores in a well used gun suggests honing; be sure you can return the gun if the wall thickness is inadequate, as measured by a smith with the equipment and interest in carefully doing so. The chambers should be 2 5/8". If not, end of chamber wall thickness is critical.
Merry Christmas, hope things work out and please give us a follow up.
