Hi George,
I'm really shocked, saddened and upset to read your news about Greg.
I'd noticed that the build had "stopped" on or around the 11th, and thought Greg had maybe put it back in the attic to temporarily recoop his "build-batteries" as we all tend to do from time to time. That it won't be completed is a loss to all on Mayhem - but nothing compared to your loss of a good friend, and to his daughter (daughters?) their father.
I'd PM'd him recently regarding some technical thoughts about a project he was considering - I know he had a pile of plans brewing up for all sorts of things, not least his long term wish for a scaled-up version of his sailing canoe.
A very very bad day for all of us.
Andy