One of the things I neglected to do was to set HV with the set in service mode and color off. 
Doing this allowed for adjustment for higher HV and better K current headroom. I have it dialed for about 225 mA, which allowed for a little brightness adjustment and fluctuation. The width is now improved, leaving just a tiny margin on either side, which from a normal viewing distance isn't noticeable. I've been monitoring the running set at 1-2 hour stretches and am not observing any red-plating or anything problematic, so far.
As far as HV measurement, sticking the probe under the cup when the HV lead comes back out to the focus divider, I believe is negatively influencing the reading. Also, when the probe is stuck under the cup, the convergence goes way off. Probe tip removed - convergence comes back. The use of the probe here seems to disengage the focus screen. If anyone has tips on how to read the HV to avoid this...I'm going to say that the HV is still a little low, possibly at 22, and this could be a result of a drifted up focus divider or the like.
As Zeno suggested, I removed the H hold plastic bracket so that the control could travel further, which helped.
@Username1 the grid was actually too negative and the screen was too positive, but I still intend to try to troubleshoot why.
For now, I'm going to enjoy the set in my bedroom. It sure makes an amazing picture.