I recently bought a replacement "pin" and seat from Lee and I'm thinking that having one coated with
stellite (a chromium/cobalt coating normally used on performance engine exhaust valves) then lapping it to
the seat is a permanent solution to the problem.
if I cannot get anyone willing to Grind me a tungsten valve pin.
The hard part is grinding threads on the upper end...
I have some Uranium rod stock but I absolutely refuse to grind it, I'm not into heavy metal poisoning...
I also have some 5/8" Hastelloy rod stock so I could make a new seat out of something nearly indestructible...