Easy FM was never tested, or designed to be used ever that's the problem. Those options were legacy CFS3 settings. We cannot make easy FM's without altering ALL the realistic FMs.. it would take many moons to make new FMs so that's not going to happen unfortunately. OFF is a realistic sim so that has to be our priority. Maybe something will come up but at the moment what we have is the only way.
Trimming out the craft is not the point, most craft did not have trim, especially in flight, that's part of the whole point of flying WW1 craft, they are very early aircraft with many inherent faults.
Turbulance in clouds cause you to spin oddly or violently without warning, even fly upwards etc Wels - avoid clouds. Also hitting other craft