How much did it cost to replace the CRT, or did you use a working CRT from a donor unit?
I'm debating whether I should liberate my Graphite by performing the necessary repairs (it works in its current state- but I am not impressed with the quality of the internal plastics). Regardless of whether I decide to go with it, I would still like to know how to swap/remove the CRT in the first-gen iMacs.