Roland PC-200 midi controller 2 keys not working

3rd D# and 49th C not working. C, C# and D, just below this D# play at 127 velocity, not at the soft touch. ONLY these keys play at full velocity.

Both don’t seem to activate with a clean pad pushing as well as using force to push down. Pad is clean, also cleaned it anyway, used a pencil after for more graphite. Nada.

Question: Is this routed to a device like a common diode etc. Do these share common parts that can fail. Any insight will help. 20 years old, this is a new issue.