Thank you! Your company's Customer Support continues to be awesome.
I tried the simplest thing first (air under the pad), and it's working fine!
Roughly a year ago, I was panicking because the MalletKAT was spontaneously changing to a piano voice in the middle of playing. The lady who answered the phone then told me to replace the internal backup battery. Sure enough, $2.99 and a half-hour later, everything was good.
So thank you for making such a great and unique instrument. My community orchestra conductor thanks you too. And thank you again for your wonderful customer support.