Nope, already confirmed earlier in this thread is something going on with B9 gear. If I make a plane with B9 gear and one using default squad gear, the squad gear works fine, the B9 will wobble/split and cause the plane to crash unless I strut them in every direction 2 or 3 times. I also have to strut the heck out of the plane to ensure that absolutely no flexing happens along the wings/fuselage. Either that, or I use standard gear and it works fine.