I've seen a few #KeyTronic keyboards in my time, but this has to be the keytronickest keyboard that ever keyed a tronic

Foam and foil pad failure up close

Patient is a #PERQ 2T2 keyboard. It almost looks like the foam's degradation process created a corrosive atmosphere around the keys that attacked the metal frame.

New foam and foil pads from TexElec are on the way --- unfortunately UK customs seems to have diverted them to Singapore? I hope they'll be on their way back soon...

File:Key Tronic foam-and-foil pads top and bottom.jpg - Wikimedia Commons