Hi - using FSX + acceleration, am not able to spool up the engines. Using 'F4' the engines will increase power then drop back to idling. Same happens with Saitek throttle. Tried with default 737-800, no a/pilot on. Have even gone back to a fresh install, of FSX - still same problem. Already reset to defaults, before re-install. Using the default 737, start a flight, the engines are running at 58%. F1 will slow this done to 20%, then they'll spool up to 58%. Opposite happens with the F4 key. Even with the Saitek unit dis-connected. This is common to all default aircraft. I have not installed an