Thanks I will check game flight mode ...I tried again last night and left the supercharger in Auto ...And it never kicked in ...I did manage to get to 20,000 and through the gate .... But the airspeed just fell off after that and i gave up ....I am a x pilot so I do know about climb performance etc and I managed to stay at 160mph upto about 18,000 then it was just possible to climb at about 500fpm and hold it there to 20,000 but the speed was not good