Nice surprise Lee seeing you on this side of the forums!
I'm not talking about, grayscale that is with in norm regarding deltas, although due to blue not tracking correctly 100 IRE is suffering.
Like I mentioned earlier, I don't think that this is a must do adjustment, but the tv will have some down time and that is my only time other than late nights to play with it, plus it wouldn't be fun if I just watch movies and TV!?!
Just saying that messing with the trim pots is the last thing you should do. Also, you didn't answer my question on your meter status.
Time for Mr. Bob to make a visit to your TV!
BTW, I still use a RPTV, it just happens to use LEDs and a light engine instead of CRTs!