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Impressive progress, for sure.
A broken cloverleaf was so common in the 60's that every time I worked on a Zenith I replaced it, need it or not. The shop always had a stack of them readily available.
Two failure components are K1 (vertical integrator) pin 11 circuit and K2 (vertical feedback) pin 9 in the 6BA11 circuit. They look like a 3 legged disc cap. Each has a different color code, but I forget the colors and which is which. One of them was a sure bet to fail (I’ve forgotten which one). When it does the vertical pulls up from the bottom and acts real goofy. Like the cloverleaf, replacement of these two items was automatic, need it or not.
You should replace these if at all possible and save some grief down the line. I’m sure you can get some advice here on fabricating replacements, if necessary.
The main thing is to enjoy your project.
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