[old_tv_nut]

Well, I tried the SAMS purity procedure, and got essentially the same result, in the process verifying that, yes, everything on the tube neck interacts with everything else on the tube neck. So, after a new purity starting point, I had to redo convergence and go back and forth a few times to finally not get the white screen uniformity much better.

When I first turned the set on today, I got reminded I should have checked that all the tubes were firmly seated after shipping (dummy!), because the high voltage died two seconds after the picture lit up. Fortunately nothing had popped and reseating tubes fixed it.

Tomorrow I'm going to play with the edge magnets some more to see what happens at the extremes of adjustment.