OK, here's the update and it's crazy. First to reset something from the original post, although in the grand scheme of things it's irrelevant. The lamp that was always lighting in column 3 was #33 (Crate Center Right) anytime another lamp form that column was on.
Anyway, I decided to test the diodes in the row associated with the wonky lamp. So, as I'm working through row 3 I come to one that tests bad, on lamp 62 (Skull Award). Thinking I'm all set I replace it and this one also tests bad. Not that's unexpected. For some reason I decide to take the bulb out of the socket, sure enough the diode now tests good. All too weird for my liking, so I stop and think for a second. The "Skull Award" lamp also fires the eyes in the skull pile mod I installed years ago. Disconnect the two connectors from that and all is well. Right now I have no idea what to make of that as I haven't dug into it yet. If memory serves the wiring for these was already in place, but the feature was removed of production. I'm not even sure if I can find references for that wiring. I need to research, but I wanted to call you guys off from trying to figure out a "common" problem as this is probably quite unique.
Thanks to everyone who's been helping. If by chance you have any ideas related to this I'd love to hear them otherwise I'll report back if I track down the issue.