I'm looking to get my pump overhauled soon. At the end of the season last year the last couple of days I would hammer down and RPM's built up quick but pump just cavitated. It would pick up after a few seconds and seemed fine. I checked for any blockage and there was none. So I figured my pump was done. I live in the Riverside, Ca. area anyone know of a good place? I was also thinking of going to a AA impeller.