I certainly am not him, but I had a floppy drive go bad on my KN5000. I sent it to a team that was trying to clone it. The report from them was that uses a very complex reading algorithm, which they could not fix. I was hoping a generic would work. No such luck. I sold it as is.
pa4X 76 ,Audya 76,Yamaha S970 , vArranger, Hammond SK1, Centerpoint Space Station