As promised here are the pictures of the lin coil on my set.
I subbed in my spare Zenith 21FJP22A today.
About 2 years ago this tube was the first tube of any type which I successfully removed the cataract on. I decided to do the swap the lazy way...Pull the chassis, neck hardware, and degauss frame(I put the set face down for this part) then loosen the adjustable tension band and lift the old CRT out. I then dropped the new CRT in, loosened the screws which connect the CRT mount hardware to the mask, tightened the band snug, tightened the screws back up then tightened the band a pinch more.
All that is left is to set up the neck hardware for the new tube before I can work on the electronics again.