Most painful pickup swap in my memory was putting Seth's in my Dot. I won't guess how many pup swaps I've done, but I've been doing them since 1982.
I worked the pots out thru the F holes and tied/taped fishing line to the old pup leads for the pull. Moved the fishing line to the Seth's leads and pulled them back to the pots with the fishing line.
Within a month the output jack crapped out and had to deal with it.
I apologized in advance to my guitar shop the next time I was in. Told them I'd be bringing the Dot to them if there were any new issues.