I decided to tear apart the weak pump on my Super Z and the valve plate was gouged up pretty bad and there was heavy scoring on the cylinder block face. Everything else looked good with the exception of metal chunks in it. I can get the repair parts and a complete seal kit for $165.00. Anyone have good luck rebuilding these pumps? I tore the whole thing down and there is no other damage anywhere. I also plan to flush the newly rebuilt drive motor to make sure none of the metal got into it when I tested it. Is a flush good enough or should I tear into that too?