Well, after swapping the neck boards things do seem better. I’m getting some replacements boards sent to me and I’m going to see if they can address the dirty G2 POT.
The swap seems to have messed with my convergence a little. I tweaked things a bit after watching a movie and the system was warmed up.
I’m at a fairly high brightness/contrast (90/65) but apparently this is quite common with these units.
I also learned from AVSForum the distinction between ‘static’ and ‘dynamic’ setup on the Ampro. The static setup is once for the unit. Dynamic is per channel. So when you are prompted for ‘static’ choices, be aware that these are global changes. This should help me understand the manual(s) a little better.