Default Old Voice Dialer comes up when screen is off - Bluetooth, 4.4.2

I upgraded to the 4.4.2 leak and I love it except for one little issue. When the screen is off and I hit the bluetooth multifunction button the old voice dialer pops up. If the screen is on and not locked, Google Now Voice search comes up. I cannot find a default app selection anywhere that I can clear to change the bluetooth button option. I even tried bluetooth launch from the play store and it does nothing, literally, with that app installed I get nothing when I press the button. Does anyone have any idea why in 4.4.2 you can't select a default app for bluetooth? Or why voice dialer comes up when the screen is off rather than Voice Search?
Any help is greatly appreciated.