Donny you need the FS-5L and than it will work you press it once to stay on and press it again to turn it off. Cal
Thanx Cal I figured that out now...so I just ordered a FS-5L
then I can use a
FS-5U for sustain & a FS-5L for on/off harmonyPS funny thing the FS-5U worked on my S970....go figure?