I've had an SK2 for nearly a year now and although it is a fantastic machine with brilliant sounds, the keyboard itself is very noisy. It squeaks and creaks quite a lot and is generally annoying particularly if playing at low volume. It also had a problem with the velocity sensitivity on one key (always being at full volume). I sent it back to the shop who cured the velocity problem but have been unable to sort out the creaking keys. I have opened the unit up myself to see if there is anything I can do (lubricate springs etc) but again to no avail. I can't believe such a great instrument (and an expensive one at that) could have such a cheap sounding keyboard. Has anyone else has had a similar problem?