To be honest, the worst moment was 2/3 of the way through the second bank of three. For some reason I decided to test them...and found two lit up red on one channel and one lit up red on another channel. I'd got red and blue swapped on one of the three and it took out all the blues. Thought I was going to have to redo the entire bank again for a minute. As it is, it thickened two of the joints (extra wire soldered in) where I really didn't have the space.
Even putting it all back together was a mission. You know when you have those days where everything seems to be on a mission to hack you off? It was one of those. Screws would slip off the Allen key, and then bury themselves in the most awkward place to get them back. You put something down for a second, turn round and it would have disappeared. I think I'd depleted all the colourful language in the area by the time I'd got it all back in!