I purchased the 13 switch footpedal and the vocalist unit. One of the 13 switches doesn't work. John at Solton thinks it's the pedal and not my keyboard. More disconcerting is that after spending all of the time installing the vocalist expansion board, I couldn't get that to work. John at Solton had me do a diagnostic test (These diagnostic tests can be initiated by pressing F1 and F10 simultaneously) that indicated that the vocalist unit wasn't working. I installed it according to instructions (I checked twice). I'm going to send that also back to Bell Solton so it can be looked at. Besides the possibility that the vocalist unit was a dud, does anybody have any ideas what could be wrong? I've appreciated all of the great advice I've gotten from you folks so far. By the way, I'm really grooving on the X1's styles. Once, I get the footpedal and vocalist unit working properly, I will start gigging with the X1 instead of the PSR 740. Thank you Uncle Dave and George Kay for talking me into giving the X1 another chance.