mgb,
You have just hit my current "what if" question right on the bull's eye!
Man, yesterday while consulting on-line literature about chassis and tube compatibility, cap kits installation and such,
that same possibility struck me.
What if the R G B convergence rings play a role on this out of focus issue?
I will start by swapping the chassis. If that doesn't change anything in the focus problem I will most certainly try to adjust the convergence rings.
If I go in that direction, what is the best way to adjust it? A color bar or a black and white grid?
The focus problem is a real pain to my eyes and I doubt I will leave it this way.
My buddies and I, we're planning to celebrate during the new year's night with an arcade bonanza
and I was hoping to have this ready for the occasion...
Thanks a lot for the input!