As I noted earlier, I am looking for an electronic piano sustain pedal with a polarity switch and some kind of anti-skate. They don't exist. It's quite perturbing, actually. There's only about 5 pedals on the market that are not just foot switches, and all of them are either unipolar or just poorly made. Tomorrow I plan to re-buy a Roland DP-10 that I already returned once, and mod it using hints from the interwebs to add a polarity switch. Whee. (B)