Hi John  Had similar issues on my 34.  Silicone, 4200 and similar all
failed as did not adhere well to the stainless chain plates as they move a
lot as rig tensions. Only thing that has worked is butyl.  Going on 10
years and no leaks. Not sure what benefits the stainless pin provides as is
not well secured. Glad to chat anytime.  John Read

On Mon, Mar 21, 2022, 4:27 PM John McCrea via CnC-List <
cnc-list@cnc-list.com> wrote:

> Hello. I have a leak on my port side chainplate that needs addressing. I
> pulled both chainplate cover plates and noticed that I had a stainless rod
> on starboard that holds the two chainplates pieces together. One on port is
> missing. Maybe that is causing excess movement and more adapt to leak? The
> covers are original and thin 1/16 aluminum. I am getting them beefed up to
> 1/8 stainless.
>
>
>
> Looks like the PO had only sealed them with clear silicone. So that will
> all be dug out. I am also inspecting the hull tabbing below with the
> chainplates etc to ensure that I do not have any issues there. What is the
> best sealant to use when installing the new cover plates? Thanks!
>
>
>
> Regards,
>
>
>
> John McCrea
>
> Talisman
>
> 1979 36-1
>
> Mystic, CT
>

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