bmd
Island in the stream.
I think it's that. I don't have another so I can't test it.
I'm tempted to open it up and see if anything's loose but then I've just remembered I don't have a soldering iron.
At this point it's porbably best to use this as an opportunity to upgrade. I really could do with a mod wheel;
I have, that you may borrow: a soldering iron, a mini usb cable or, probably, whatever else you need. Also, you could try a qwerty keyboard as a midi controller. See if that goes wonky. Lastly, you have 12 months to send it back.