The metal , which is all stainless took a fair amount of time to straighten out. As I mentioned the pump was not used since the 80's and it looked liked some body had intentionally tried to dent most of the panels , especially the top .It looked like somebody had repeatedly hit it with a ball pein hammer . I used different shaped pieces of wood and several different sized hammers to get it straight . The front panels ,that are removable to service the computing mechanism and the pumps were really rough . At some point somebody had covered them with a vinyl overlay type decal , then painted over top. When I finally got it down to bare metal , I realized the panels had also been badly dented . So out came the Bondo and I filled and sanded both sides .
The rest of the trim looks like cast aluminum and I used a buffer to polish it.