I'm getting a Sencore CR70

[Jon A.]

Originally Posted by dtvmcdonald

One thing bothers me about "rebuilding" color tubes: the filaments are all
in parallel, so if it overheats one it overheats all. I would have no reticence
trying it on my 15GP22's red gun alone, but I worry about hurting the two good guns.

I don't know if this would help, but the green gun in my Electrohome had drifted slightly out of balance with the others so I gave it a gentle jolt and brought it back up to snuff. It's been a couple of days and it still looks good. The picture had a slight yellowish tinge when I first started it but that quickly vanished.