The faucets/valves feeding our washing machine have been leaking. We’re trying to replace the compression fitting on a quarter-turn, 1/2" compression valve, but the ferrule/olive/metal ring from the old fitting is still stuck on the wall pipe, which means we can’t get the bolt off either since it’s behind the ferrule.
Tried prying the bolt with a hammer to make the ferrule slide, but no luck. It’s stuck pretty good, and there seems to be really old putty or something around it, too. The space is kinda tight to use a hack saw on the bolt, plus that would still leave the problem of the stuck ferrule.
Any suggestions or miracle cures for this kind of thing?