Barry, I've done upgrades at the last 3 Yorks, and totally disagree that it was under "the most primitive conditions." I do disagree with statements that it always takes 2 tries. I've done many remotes and tiu's that worked on the first try, and somethat took many more.
I have a gentle reminder for those seeking to get upgrades at York:
PLEASE HAVE NEW BATTERIES IN THE REMOTE OR DON'T WASTE OUR TIME