The designs had taken an age to finalise, the mock ups had failed to perform anything like adequately and to cap it all, just as production was due to go into full swing; a flu outbreak had left the main production line idle for weeks.
It really was touch and go right to the end.
But as ever, when the big day came, everything ran like clockwork. The deliveries all got away on time and the senior elves gave a collective sigh of relief and swore it would definitely be better next year.