After some more investigation, I encountered a newbie mistake. It seems that I didn't get the bumblebees on the first time around
Replacing the bumblebee cap on the horizontal linearity coil did the trick. It now locks in solidly when changing the channel.
Also replaced one of the two damper filter caps. The other, as it turns out, I have to order, as I must have used it for something else.
After the capacitor replacement, here's what changed....
Now, though it locks in solidly, I cannot change the horizontal hold at ALL. Nothing seems to affect it. It does lock in properly, but crank the horizontal hold to both detents, and you get no change. Same with the horizontal range control.
It also seems that I'm now getting a buzz in the audio. I can tune it out for the most part, but it's still there. At the beginning of this, I aligned the audio by ear, and got it perfect. Wonder if something is now off, now that I'm replacing components.
The high voltage is low also, as I'm getting blooming with the brightness control, and on screens that would have a very bright picture, such as all white...it goes out of focus. Still some screen shrinkage, but now only on the right side of the picture, and now the screen shrinkage is apparent off channel somewhat as well.
Now the one thing that I DID notice is that if I'm reading this correctly, some TV repairman stuck a .01 bumbebee in instead of a .05 at C91 in the sams, which is the other damper filter cap. Is this a possible cause of this stuff?
I realize that I'm not exactly following the suggestions, but as light bulbs light and I get the time, I've been working on the set with the parts I've got. I'm just going to order the cathode 6BG6 resistors on the next parts order, as it seems that I've got more work to do.....