I have a 86 indy 600 with a bad water pump. The inner seal is leaking and it drips out the weap hole on the pump. They say they are not rebuildable and polaris no longer offers them new nor do they give a new part # for a new pump that will work. I've already bought a used one and it lasted 200 miles before doing the same thing. Does anyone know how to rebuild them, know if a company makes a reproduction one, or know how to retrofit a newer pump onto my machine?