Just to share, I have the MVVS/EVO 26cc gasser up front, while running in the engine the vibration was enough to shake my landing gear bolts loose, as well as one servo arm. Nothing that a little locktite wont sort out. But the firewally looks fine so far, after two hours of running on the ground. I know of two local flyers who have the same engine bolted on the nose of a funtana 90, an no problems with the firewall so far.
Of course, all the screws do suffer from the vibration
