I did tape 3 US quarters at the positions suggested, and I just keep resisting the urge of putting my hands down, even for lazy typing. I know it's bad. Right now I'm on recovery of Carpal Tunnel Syndrome. (So I have just a month with the Kinesis)
I actually thought of the palm buttons as an alternative of my current workflow, and surprise, you had done it, and shared even the switches that can fit inside... Thanks! (I already ordered and received mine)
My current workflow: Im very used to the inverted T of regular keyboards, and is hard for me to really get used to the keys originally on the Kinesis. Also, using Command, Alt, control and Shift all the time for selecting and copying text, is not really friendly on the default Kinesis layout. So Right now Im using my trusty ControllerMate to do some extra layers, and pressing the key of DELETE to convert jkli in the arrow keys, and asdf as Shift Ctrl Alt Command, that way I can edit the text and move it around with all the modifiers without leaving the home position.
What I want to do is to make the palm buttons turn on this special layer (Maybe using the keypad layer all reprogramed).
But Im afraid of screwing my keyboard with the mod. I found that resting my palms on top of the buttons does not hurt me, but resting them on the sides, with natural position (non pronation) it does hurt... weird.