I took the head assembly all apart and cleaned all the parts I could. I could not get the assembly valves out of the thing, but they turn freely and I can blow air through them one way but not the other. I think that tells me they are working at least. I did not see any evidence of pitting inside the pump except for one tiny spot near one of the pump pistons but it is not in contact with any moving parts so I suspect it is an original factory defect that does not affect operation. I haven't tested it yet, put that off til tomorrow, I'm the camp cook and it is that time of day.
