Speaking of not being able to stop digging... well, we had the seals on hand anyways...
We looked at the glass seals, and the windshield has been leaking and rusting - go figure...
So we removed the back glass and the windshield, to (1) repair the rust, (2) make masking and painting a LOT easier, and (3) make cleaning massive primer overspray off of the glass easier (Thank you Hal, hahaha!) At least the metal around the back glass is in good shape!
Before wire-brushing the windshield channel rust: