I see :-) I made the mistake of thinking it was a K4 because I always associate this site with K4/K4r ... my bad. I also notice on another kawai site someone was asking about keyboards -- when I didn't see my reply I thought "oops, I am having a senior moment" ... phew .. different forum, similar topic.
OK I will look for these Teflon parts -- this must be what I am missing on mine. I can check if some of the more anchored keys have this. Would be great to know if there was a part number/replacement to get it fixed.
Regards
Steve H