thats what i meant when i said i checked the pump, physically took it off, tore it down and didnt see any problems. but untill i had another sitting right next to it to compare to, it looked perfect. to be honest, the difference was so mild, i almost didnt install the new one. figured, that cant be it. but then it hit me, it was only 20bucks, might as well try it. sure as hell it made a huge difference.