Really bad luck, Nitrah, but I'm relating because I'm having a run of issues with vintage guns myself. My 32" L C Smith needs a new top lever spring ............ it's opening the top lever enough, after the first shot, that it won't fire the second. My 30" AE 16 ga. Philly Fox broke a piece off the barrel underlug last Sunday afternoon on a dove shoot.
We are using these old guns way past the age that the makers anticipated, IMO. Sorry for your problem, but we should not be surprised when this kind of thing happens to them.
Hope you get it sorted out successfully.
SRH