Perhaps an updated replacement for the A. O. Smith motor? I think the axle's so bent, it keeps getting stuck inside the plastic housing. So, new motor, POSSIBLY new impeller and new housing to achieve a good seal? YouTubed a vid on replacing the motor. He had a screwdriver on the end to hold it and spun the impeller off by hand. But with the endcap off, I don't see any screws to hold in order to do so.