My pool vac is painfully slow these days. The wings, shoes, and pods have recently been replaced (was working well for a while). I think the front/rear flaps too? It was getting all twisted every night but now it's not, just very slow. It turns left, right, and center. I also checked the pressure with the hayward gauge and it was too much, if anything! I adjusted it to be right in the middle with little improvement.
Oh, and I have new tiny bubbles in my return, I suspect from PVC leaks in/out of my pump because I think it was running dry one night. The suction at the end of the hose is still falling in the middle of the guage!