[TV MAN]

As for the line burned in the tube, you will notice it. Saddly. Had the same on a 1953 Zenith. The original owner ran it with a collapsed vertical for the "sound", while watching a small portable set that had no sound. She could have turned down the brightness. Old lady. Turned out to be a dirty linearity control. The line was very noticeable to me. I never used it after that, but 35 years later found a NOS tube. Of course, now I need to recap everything. Almost don't want to use that new tube lol!