Hmm, good questions, I guess I'd be inclined to leave out Black Cat Bones & Graham Bond (unless anyone else who has further info on these guys speaks up...now!) as it seems less likely to me that Weston had much (if any) involvement with either of these bands, at least the others around that time frame are more "documented" BUT in contrast we seem to have TOO much documentation for the Gillespie thing. Geez, I had never heard of that "two year" quote before. Well, if I was deciding, I guess I'd just assume that Weston must have left the band before the US tour (whenever that might have been, since a leaving date has to be on it, I would say 12/74) because he was definately in Howard Werth & The Moonbeams (not to mention this "heavy involvement" in the Murray Head band) in '75 as well as the Marriott All Stars deal but I'll go with whatever the majority says.
John