Alright I purchased some new wall fittings based on the old ones being damaged. I went to install them, but as I was turning the lower fitting above the intake, this one:
Standard Wall Fitting
I noticed that it seemed to keep turning on the inner side of the pool.
When I went to install the ball valve setup:
I noticed that when I was getting to what I guess I am used to considering as "tight" on other things, it would actually start turning the wall fitting. Enough so that the gasket shifted and went up and over the inner portion of the wall fitting.
When I went to try and take the ball valve setup off then it started turning the wall fitting so I needed a wrench to hold it still.
So my question is this, for pools, how tight should everything be?