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I mistakenly overtightened the firematic valve by turning it a bit too far. I heard a snap when doing this. I closed the valve, took the handle off, and noticed that some of the threads on the valve handle had been stripped. However, I was able to get the handle back on and re-open the valve. How do I know if the valve is still fully operational? It opens and closes but is it possible that the spring is broken (or something else)?