Mike, I've been gigging with the PX5S for over a year now and love it. It's somewhat high profile, being used as the house keyboard at the #1 Blues Jam in Denver. I'm using MIDI to drive a Roland organ module for better organ sounds. Right before the warranty expired a couple of months ago, the PX5 stopped sending a MIDI signal out, and it seemed like a hardware problem. Shipped back to Jersey, returned to me. Worked the first time I turned it on, then quit sending signal again after turning it off and back on. (I think that it was shipped back to me in the on state running on batteries). Talking with Casio on the phone, we discovered that the only way to get MIDI out to work was to 1) initialize the whole keyboard every time I turn it on, and 2) then reload my custom settings. No one seems to know why this might be. I hadn't changed any settings in about 8 months, so don't know why this sudden change. Anyway, any insight into this would be appreciated. I'm running firmware 1.10, and am a bit nervous about upgrading that I may have a problem with my long-standing custom settings (which were put in place on 1.10), which took a lot of work. Again, for 8 months with this firmware and custom settings, it worked fine. Do you think that updating the firmware would have a bearing on this particular problem? Would my custom settings install seamlessly? Thanks!