I think it is from the prop wash. My buddies X-Air does the same thing.
For a light sport aircraft it is roomy, comfortable and has over 600 lbs of useful load. Not a speed demon but it gets off the ground quick and lands fairly slow. Gets me into some fairly remote places. And more importantly, gets me back out.
A 2000 hour tbo and I can do my own annuals. All in all a fair backcountry ride.
OH! And best of all! ...It's paid for!



