Try again.
My ‘79 MA purchased in ‘96, required a new transom and repower in ‘99. CSC was not founded until 2002, so I rebuilt mine to 20”. Bad idea.
Fortunately I found a competent glass guy to use marine plywood and rebuild from inside. He’s dead now. Unfortunately, neither of us understood Mr. Mosely’s theory of cross over floor drains, so we scrapped it, allowing vertical drains to flush into the bilge. Bad idea number 2.
I have replaced brass drain tubes in early Boston Whaler Sports, and the process, with the tool, measuring, heating and annealing is not fun.
If I were you I’d go back to original design because it simply works. On my Seafari, the vertical floor drains go through hull, with wedges forward, causing a Venturi effect while underway. Plugs in while fishing (weight in stern), pulled on plane and when at rest at the dock. Must be the additional weight of the cap that allows this versus a CC. A very nice feature. Hope this helps.
Disclaimer: I am a Disabled firefighter. I am not an aero/naughtical engineer, nor understand advanced physics. However, I do read CSC daily, whether logged in or out!?!
Michael.
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