Jusy PM'ed Waylon for more information.
The problem with midi is the same problem you have with sevens.. ie the controllers that attach to existing systems only support tracking six strings... it's the only reason I didn't get the midi system on my KxK along with the piezo preamp.
Just use two drivers.
![Yes Way :yesway: :yesway:](http://www.sevenstring.org/styles/default/xenforo/smilies/yesway.gif)