I was on the squadron in 1990 and know what the 'theory' was. The TriStar prodding wasn't really followed up as it was impractical.
Perhaps I wasn't clear. The only practical tanker for a TriStar, was deemed to be another one (capacity), ergo, any aircraft that could refuel the aircraft could do its task. I knew what I meant, sorry if it wasn't clear.
I won't get drawn into this lot as it amounts to the redistribution of air at 37 Celsius and doesn't serve any purpose.
But for God's sake stop responding to 411, it's tedious.
Yes, I'm a volunteer and now I'm off somewhere else. Bye chaps, I might be some time . . .