to anyone who may want to use this system the stock radio tray does not bolt up directly as it should (because it says right there on the website it fits a 770. right???). after contacting KDE direct-ly, this is what i did to make the new tray system work with my 770 and a Kosmik.
the 4, 3mm holes you can see in the picture were drilled and tapped by me. there is just enough material left to match up the Kosmik bolt holes. after this is done you can still cut down your stock tray or use a 700 size tray to mount bec, battery, ect... if needed
Team Synergy, Team FBL Rotors-------if its not broke...it will be!