[Electrothaumaturgist]

I agree with the above replies about changing the wires. I've tried sleeving them, and outright changing them. Maybe it was just me, but I had a difficult time trying to shove that tubing around tight corners, especially on the pushbutton circuit board of the 42-400. (Before pulling it down). There, I was able to unsolder one side of the wire and attach my new wire to it, (with a touch of solder to tie them together, for the really tight ones), and pull the old out, the new will follow it. Sometimes you have to pull some slack out in sections with a pick, until it all comes. It can go like clockwork, once you "get into the zone". (Don't forget to mark or flag where they connect to!).