I really didn't notice it vibrating that bad, or at least not what I would call excessive for a gasser. I am certain that when the wings are mounted it will also help dampen vibration to some extent. I should probably double check the prop balance as well, but the only real thing I noticed in the video is that there is a wheel pant that I still need to fix that is loose that moves excessive when I reved it up. The vibration back at the tail feathers looks pretty much the same as my Zenoah G38 that I had on a Giant Super Sportster. Actually I really didn't notice it being any worse than running a big Saito 4 stroke, but after watching the video again..it does look worse in the video than it actually was.