Hi, all. I've been in the process of trying to buy a 55c and just completed survey & seatrial. The boat's been neglected on a lot of regular monthly type maintenance, and as a result there are 2 seacocks that the surveyor flagged that were stuck in the open position. Obviously not a good position for safety and something that would have to be cured posthaste.

I know that Vaseline is a decent lube to use for one that you can access in the closed position with the hose removed, but is there a way to free one up that's stuck open? Clearly it's a non-starter to try to remove the hose to access the inner ball. I have to confess that I've never had to take one apart (other than replacing handles a couple of times), and I've never had to deal with one totally seized.

Any help would be appreciated. If I went further in pursuing this boat, I'd really not want to have to haul again just to rehab seacocks, but if that's what it takes then that's what it takes.