Gary, 2 pedals are M-AUDIO SP2 and YAMAHA FC3. M-AUDIO pedal had been working for about a month, but now it's not. That's why I thought it was a pedal problem, and I bought a new pedal which is Yamaha FC3. But it gave me the same problem, making me realize it actually could be a problem within the keyboard itself. I already tried initializing/resetting to a factory setting several times, and when I connect the headphone directly to the keyboard the concert grand piano sound still sounds very funky and weird. And pedal doesn't work. I don't really know how to "instal" the firmware update to my keyboard, but I think probably it's the keyboard's problem, as resetting to a factory setting doesn't solve the issue. It's weird because sustain being there when pedal is NOT connected, and not being there when it IS connected, means that the machine can still read the connection. However, I don't know why it is in backwards. I may have to get a customer service on this one... but even then I don't know where to begin. I bought it from a guitar center with pro coverage for 2 years, but I also know that there is a CASIO warranty of 1 year that came with it. Is there a difference which warranty I use? And how should I begin getting customer service on the product?? It's sad that this happened within like a month after purchase.