Brilliant! Worked like a champ. I learned a few things. 1) my new pump seal performs fantastic. 2) one and a half pumps blows the valve out slicker than snot. 3) I need a replacement valve.What looks like the guns original valve has the first 4 threads obliterated. Not cross threaded, more like worn smooth. It was in fact a single port notched valve. Also realized my safety is supposed to have a spring washer, but it's missing. Back to eBay. At least I can do some more cleaning of the valve chamber while I wait for parts.BTW, now that I have the replacement hammer, is there a way to verify it is the right one? Looks right but I have a supper hair trigger. Wondering if that's normal or if there are ways to improve that?Thanks again for your help. Probably wouldn't have thought of that myself for a decade or more.