I installed those parts tonight... and it did not work. In fact, it made the retrace lines worse.
I looked over the Sams some more, and found that the video circuits aren't quite the same as pictured in the diagram for installing the vertical blanking circuit. In the VB circuit diagram, the brightness control is tied to a CRT grid. In my set, the brightness control is tied to the CRT cathode on the other side of a 100k resistor. This is located just above C24 a couple of posts back. It's not seen because that was the edge of the picture.
If someone has an idea for another way of doing this, I'm all ears.
