Tunnel vision is kind of sad. I've been wondering about how to cure it. I'm pretty sure it's caused mostly by failure of the adhesive holding the contacts to the panel, but am unsure as to how I would go about repairing it. Sourcing the replacement glue (some kind of special conductive junk) and removing the old stuff without damaging anything would most likely be the hardest parts.

But when they work, the 180s are wonderful, and that's not a bad price for one with those specifications.