I've just read a bit more on this. It also has a 3rd push function so it would do up/down and write as well.
From: tim p <target9@...>
To: "korgpolyex@yahoogroups.com" <korgpolyex@yahoogroups.com>
Sent: Wednesday, 27 March 2013, 22:57
Subject: RE: [korgpolyex] Replacing up down buttons
Thanks - most interesting as I was wondering if I could do the same mod to my poly61
Sent from my Windows Phone