[Wavery]

Originally Posted by Deb Mac

No problem. Enhance away. Unfortunately I have found exactly where the thing was leaking…. Inside the top knurled abs nut, there is supposed to be 2 little lips, that keep that nut on the pipe, and puts even pressure on the washer inside. One has broken off, worn off, possibly from being over tightened over the years, or just time and a little misalignment. In fact, with just a little lift, I can pop that nut right off! I discovered it after looking more closely when it looked cross threaded, though I knew it wasn’t…

So still leaking. Tested in the bathroom sink…. I have a possible fix though…. Will let you know after an evening of chewing on it and see if I can come up with a workaround. I have tried to find a replacement, but everything I can find is 1 1/4” at the strainer end, but 1 1/2” at the outlet to the grey tank. These are 1 1/4” at both ends. Might have to do some creative abs surgery. Maybe buy a replacement and “transplant” the distal end of this onto the new one.

Fortunately, our local bargain shop has something that looks perfect, except for the 1 1/2” back end. So I will take the whole thing over there tomorrow morning, make sure the front end fits everything properly, and “scrub in” for some surgery. More to come.

Could you use a clamp on rubber reducer?

https://www.amazon.com/EVERCONNECT-4...s%2C315&sr=8-3

Here's an ABS trap reducer:
https://www.amazon.com/Genova-Produc...s%2C367&sr=8-9

There seems to be all sorts of 1.25" P-traps available.

https://www.amazon.com/s?k=1.25%22+a...ref=nb_sb_noss