I decided to go with a Brain flight controller setup on my T4. I redesigned the top plate to have some captured nuts that can be screwed into from the top once the top plate is installed. I added a separate isolated mounting plate for the camera. I was having major stability issues with too much mass on the flight controller isolated plate. I will have to post the flight controller plate later once I recreate it(my file got corrupted). I use 100g iso balls between the plate and 3m X 5 screws and lock nuts to attach from the T4 top plate to the component plate Update 6/3/15 Finally got a chance to recreate the isolated flight controller plate. 31 x 31mm spacing for the flight controller.