1. Backwards pitch bend ribbon (towards the keyboard is bend up)
2. pitch bend ribbon is set to modulation control by default - only by holding down the adjacent button will it output pitch bent info, but holding down the button makes your hand nearly useless in the process.
3. No damper button.
Not knowing what to find, I venture forward.
These tiny screws are held up from the board by a variety of slightly different spacers. If you don't get them put back together correctly, the "whammy bar" or whatever button won't correctly. The goal here is to bypass that button anyway, but why make things uglier than they need to be? Besides, it's a minor puzzle.
The final result. Relatively innocuous modification. I decided to place the switch here because it is out of the way, but still available while playing.
As for the other things I had hoped to fix;
The ribbon controller seems to consist of about 8 touch pads and a micro controller which I'm assuming generates data based on which touch pads are pressed. Not a particularly high resolution device. I wasn't willing to get into it on my only keytar, but once I grab a spare, I have hopes for cutting all the traces on the PCB and re-connecting them in reverse to fix the pitch bend. A little bit obnoxious, but I don't see why it wouldn't work, as long as I can avoid burning out the SMD chip.
The keytar does provide an 1/8" jack for control pedal functions. According to the manual it can handle one analog expression pedal (no details provided) and one "digital stomp switch" which functions as a damper pedal. Now if there's a standard for "digital stomp switches" I'm not aware of it, maybe someone can enlighten me? But for the moment, I find my hopes of a damper control on the back of the handle (similar to Roland's AX series of keytars) dashed.