I was speaking with a technician the other day while he was working on my K25. He reportedly has seen quite a few PC88s with keyboard problems and also added, K'weil is going to be or already is (I don't remember which) replacing the keyboard of the PCs with the board used in K25X. Again, this is only what I was told so I do not know if it is fact, but I have found this tech to be a reliable source.