I thought I'd start a new thread because the other one is getting rather large and this is a much more general question. I am in the process of repairing soft decks (P/S) where the forward mast stays attach to the deck. I have removed the deck fills for fresh water (stbd) and waste pump out (port). They are original and are aluminum (FW) and plastic (Waste). I took them to Hamilton Marine and everything there has a different bolt circle (the imaginary diameter of the three screw holes). Where does one find replacement deck fills for old O'days?