Thanks Mach4.
So far so good on the delivery valve seals. Looking like that was the last of my pinging problem, but STILL keeping my fingers crossed. Other things have "fixed" it for awhile, only to return later.
I test drove this a couple days ago:
2001 Dodge Ram 2500 Quad Cab 5-Speed Turbo Diesel
Almost pulled the trigger. Sure would be nice to just make a payment(which I'm essentially already doing) and drive.