I just bought a 25 years old IBM model M, and I found that key sounds are not equal between keys.
I'm thinking about buying new pivot plates from Unicomp.
1. Are older (25yrs) pivot plates and springs are much better than Unicomp ones?
2. Do Unicomp parts have any issues, especially pivot plates, because of their old manufacturing tools?
3. Will I benefit from changing pivot plates to new ones?