Yes...I'm not giving up. Somewhere on Google I even heard of a comparison test, in which a (dexterity-wise) hard to play piece was played and the zebra Kbd player complaint that "it was unfair", because on the Janko piano it is much easier to play.
In the meantime I managed to cover all Tyros3 zebra keys with galvanized tin.
The good news is that the coverings are very strong, touch non-of the adjacent keys, offer a firm platform to epoxy-glue the wooden Janko support blocks and are easily reversible! What more could I wish for?
I know, I could have used a cheap MIDI controller, but then I would have to shelve it over or under the Tyros and then its functions will also be somewhat limited.
I also converted a 120-button accordion bass (bass part only) to MIDI from an old, electronic Farfisa accordion. It had only one contact per button and so, I had to combine wire up all bass and chord notes via diode blocks... hell of a work! Yet, my eternal patience got me through in a week and it sounds incredible; even manually enhances its styles.
The advantage of it is that it very light on the fingers, for each button only needs to touch one silver contact wire!! I have got all details here, in case anyone of you would like to have'em.
Before that I converted another accordion bass to MIDI by just adding silver contacts onto its 24 air flaps, yet that made button press considerably harder. So, I sold it for about $US400 on eBay in two days! Here's how I tin covered the Tyros3 keys as preparation for the Janko Kbd glue-on:
I also found and bought these great looking buttons:
http://www.aliexpress.com/snapshot/6751627197.html?orderId=68006169494390
They are a bit thick (8mm) and I might have to sand them down somewhat. Here is a sgl. Pic of how I tin covered the Tyros3 keys:
https://www.mediafire.com/?pf9ddqd6q2f6rs5
Since I'm in a musician forum, I thought of asking you great Musos if anyone of you is interested in combining my emotional creative whistling with your musical creativity? Maybe we can create some unique recordings, because the music market has no whistling recordings. Let's see, if I qualify. My name is Johannes K. Drinda. Here are some Demos of my twitter:
http://www.artwhistling.org/international/en/hear-us
https://www.mediafire.com/?t0mocnkevh9bz1c
https://app.box.com/s/6f72eb90c2002db2e9fc
https://app.box.com/s/bluoxacemqlslhtq9bv9
https://app.box.com/s/3ahg6ytsixqnzxzluos4