Hello.
Currently I'm working on restoring an IBM Model F AT that I've recently acquired. So far disassembly, cleaning, and reassembly has all gone well. However I'm currently having an issue with with the shift keys and enter key. I know the hammers are in correclty and the controller works because I can compress and decompress the springs manually or put a different keycap on them and get it to work correctly. However, when the shift and enter keycaps are placed on it they refuse to register keystrokes. Initially I believed this was due to the keys colliding with the rubber stabilizer brackets, but even after I removed them the shift/enter keys still refuse to register keystrokes with the keycaps on. Any idea what could be causing this? I don't believe the key caps are damaged in any way.
