This tub has two shoulder jets on one of the seats. These two jets spin freely, but there no spray from either of them. They seem to be the only 2 jets that do not work. There is a very tiny trickle from both jets.

Any ideas?

Try opening them.... (Rotate outer flange).

Sometimes it's the easiest thing Thanks.

There are also two spinning underwater jets that are allowing water to flow backwards into the passive air distribution block. I assume there is a broken check valve inside these jets or something?

I was looking on spaguyparts.com and found dozens of replacement jets. How do I find the right one?