I just bought a used KT 88, which works fine, except that when I plugged in a Yamaha sustain pedal, the sustain effect is reversed. No pedal- sustain, pedal down - no sustain.

I was told to "reverse the polarity" within the system properties, but the only setting I could find only talked about having sustain on or another effect on.

I'm not too experienced with the inner workings of midi or keyboards, although not a complete newbie, and any help would be greatly appreciated.

Dave Wood