No...
100% of the jello motion you see in the video is in the mount and had the video been post processed (edited), most if not all would have been magically removed. Actually, EN-04 is a VERY smooth and vibration free RV-12 compliments of ACES SYSTEMS who donated a Sport model prop balancer. Thank you ACES.

Whew! I was a little nervous, there.

giphy.gif