Sometimes you close one book and open another. Greg is a great guy, an extrordinary car guy. From my way of looking at it, you could build a great car, just from following his mistakes, let alone copying his sucesses.
I'm sure he has found happines where ever he is currently sharing his knowledge. Obviously if he isn't posting here any more he has reasons. Far as I know, he (and others) are around on the 'Net and continues to maintain contact with a number of people
His '63, Galaxie, nicknamed "Battle Start Gallactica", was the prime reason I was attracted to this site in the first place. If he said something automotive related, you could just about regard it as papal truth.
The "Old guard" is like an Oasis in the desert, you never miss it, as long as it is around. What the heck, aren't there enough...new self proclaimed experts around to answer your questions?