You know, I thought the same thing about the tiny ion burn. Since my old CRT was so weak, the few times I tried it out, I never saw that little tiny white dot after I turned the set off. This time, I did. It was off-center, down and to the left of the old burn. I think I need to turn my yoke slightly counter-clockwise and maybe fiddle with the centering magnets.
I'll try that "hor drive" control later and see how it changes things. Mine is on the back, along with a fringe lock and buzz control. There's also a bulls-eye adjustment but that had something to do with the tuner.
I remember you saying once how unnerving that first power-up can be after doing major work, and boy was I feeling it today! I've only replaced capacitors in two old radios so far, and I'm still pretty new to it. In the case of this Zenith, I've replaced almost 40 components so far, including all of the electrolytics. Since I had already ordered axial caps, I decided I wouldn't attempt to re-stuff the old cans and instead simply install the capacitors under the chassis. Figuring out how and where to position these capacitors made my brain hurt, but I'm pleased with the result. I feel that the resulting layout doesn't look too shabby, and thankfully... nothing popped, crackled, or smoked. Maybe I'm getting better at this.
