Thanks, Craig and Ted. I'm glad to know I'm not the only one for whom these ports have leaked. I like your solution, Craig, and will go with that in the future. As for drawing down both tanks simultaneously, when both valves are open then the water from the higher bow tank is trying to fill (overfill in this case) the stern tank. So we just use the stern tank first, then open both at the manifold which partly fills the stern tank and draws down the bow tank -- I think.
Thanks again, Jay
PSC 37 Kenlanu, heading off for two months of cruising Maine and Nova Scotia.