Hi,
Thanks for the reply. Both aircraft in question, Blackburn Skua and Comper Kite, should be pretty much all in line so behave conventionally you would imagine. I have a Supermarine Walrus with its high mounted engine, which behaves perfectly, ie cut throttle gently, nose slowly drops and aircraft descends, add power and it climbs. The difficulty with the other two is that you cut power slightly, the nose comes up, speed tends to bleed off so the nose comes up further, and vice verse making trimming very tricky and in the rear world the aircraft inherently dangerous! I've tried playing around with c of g and engine height in the Comper aircraft.cfg but there are clearly other factors at work as it doesn't improve things, in fact makes them worse.