Latest issue of PC Gamer.

[BigC208]

Looks to me that the vibration was just weather/turbulence related. Try shooting at a bomber while flying thru propwash and wingtip vortices. Now ad thermals and nasty convective weather and it will become a choir just to keep the plane right side up. At Erco, acording to the FAA you're supposed to keep those "mighty dark clouds 20 miles to your left or right....(hehe,8000hr freight dog here). If they're going to model the weather like that I hope they give us a sailplane at some point.