Archive of the former Yahoo!Groups mailing list: Korg Poly800/EX800 Users

I recently bought another Poly800 and there is a weird problem with
the joystick modulation. The synth will go into full modulation, as
if the joystick was pushed all the way up, even when the joystick is
centered.
It's not just internal, either. I tried using the Poly800 to control
my MS2000 and I got the modulation in the MS as well.
I assume this is some simple adjustment, but can anyone tell me how to
do it or what to look for?

Thanks!