Mike, do you happen to know what radius is on the bottom of a lifter? It would be very easy to assemble a fixture to dress the bottom of a lifter back to the correct radius, using a long bed lathe and a tool post grinder or a die grinder.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!