I have a danner mag drive 18b thats been in storage as a backup. I got the pump out of storage and the screws are showing signs of rust/corrosion. I removed the screws and manifold mount and there was signs of rust around the screw holes and gasket that wouldn’t rub off. Would soaking it in acid cure it? Or should i get another pump To be on the safe side? My plan was to either run it on the mix bin or sump return