Hi Mary Lou,
 Thanks for the response and the link. Unfortunately the part that broke is molded into the portlight body. If that part is even available it will likely cost most of the cost of a new portlight and will necessitate all the work of a new install. Ultimately that's where this will probably lead, but being a cheapskate I'll exhaust the other possibilities first. Fortunately there are two mounting screws immediately adjacent to the dog assembly that can be drafted into service as mounting points for some printed parts which I hope will serve the needed purpose.
 Upon reflection my guess is that the gaskets are shot and that the dogs have been over tightened trying to seal the opening to the point that the plastic simply gave up and broke. My hope is that replacing the gaskets will set things right.

Thanks again,
 Peter
     On Thursday, May 4, 2023, 10:44:02 AM EDT, Mary Lou Troy <mtroy at atlanticbb.net> wrote:

 Beckson has (or I should say had as I haven't looked lately) lots of replacement parts for their ports. If the body of the port is sound, I'd look for those. I think Defender and SailboatOwners.com have them and who knows who else.
https://www.beckson.com/component.html

Mary Lou
ex Rhodes 22
now Rosborough RF-246
Tara
Rock Hall, MD

On 5/4/2023 9:43 AM, Peter via Rhodes22-list wrote:
>    I have a new to me 86 rhodes which I purchased with a broken dog assembly on one of the opening portlights.  The previous owner told me that he bumped it while stowing the table and it broke.  Prior to that it did not leak.  I devised a fix which has not been entirely successful, but which I think will ultimately work.
>    Recently we've had a bit of rain, and I've been seeing some leaking from the other opening port.  Thinking that there might be some dirt in the seals, I started opening the port to wipe down the seal and the dog assembly crumbled into my hand.
>    I'm wondering if anyone else has had an issue with the Beckson portlight plastic becoming brittle and failing unexpectedly. I'm guessing these are original to the boat and that nearly 40 years of uv has taken its toll.  Attached are some photos of the 1st portlight failure and version 2.0 of the fix
>
> Thanks,
>      Peter
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