Some useful info on jello:
"
Jello on GoPro Cameras:
50% of jello is vibration and dampening related, and the 50% remaining are wrong PID settings, mostly D setting and also the power to the motor. A simple test is, once gimbal is initialized, put a finger on the camera and very slightly press pitch. If you can feel a small “buzzing” or vibration appearing, the D gain or the power might be too high. Remember that it is not necessary (also not recommended) to have ultra-fast “back to neutral” when forcing the gimbal to move. We will never have similar reactions in flight and better have a smooth and linear back to neutral with the small bounce as explained regarding gain and reaction time, than ultra-fast and sharp return to neutral that will cause you moreproblems in flights that what you expected."
Source:
http://aerialpixels.com/support/alexmos ... ing-guide/
Interesting as some people are adamant that jello is not caused by anything other than dampers etc.
Perhaps that 'interference board' goes some way to regulate power too?