HP-25C bad keyboard -- repairable?

[mpark]

My HP-25C died many years ago but I've kept it around. I have a vague recollection of it developing a bad key and that teenaged me took it apart and the darn thing never worked again.

Anyway, I recently found this forum and discovered the possibility of breathing new life into my old calculator, so I dug it out and opened it up to see what condition it was in, particularly the keyboard.

Turns out it's worse than I remembered. I found a half dozen keys that make intermittent or no contact when pressed.

Is the keyboard repairable? If so, what's the process?