Previous repairs didn’t hold. Epoxy repairs didn’t hold pcv from continuing to crack and leak hugely. So after a week wating for new parts, and another week waiting for the right parts, I have achieved success. The tub is in full working order in its new location.
Total cost of repair: $150 for parts. And 4 months waiting for good weather to work outdoors and other things.
What I learned… if I’m turning the tub off for the winter, properly winterize by draining pipes under the tub and adding RV antifreeze.