Hello fellow Model M owners! I'm currently restoring a 1987 silver label Model M, with part number 1390120. Boy so far this has been an interesting project. I had agreed to bolt mod it for a friend, and it arrived in terrible condition. It had stopped working entirely, and when I opened it up, not only was it filthy, but EVERY SINGLE PLASTIC RIVET had fallen out. I tried to bolt mod it, but the barrel plate cracked into pieces when I tried to rescrew it. One Unicomp order later, and now it has a brand new barrel plate, but it still is slightly broken.
The key issue here is that the "V" key has failed. I knew this was an issue from before, as the owner had said that the V key stopped working a long time before the rest of the keys. At first I thought this was due to the slowing breaking plastic rivets. But that isn't the reason it doesn't work, since it should now that I bolt modded it. The spring does buckle, the flipper does move, but the membrane doesn't seem to sense it. So I came to consult you guys on how I should move forward. What is the most likely issue? Should I get a new membrane assembly from Unicomp? Or is it a simple fix?