I'm having difficulty with the FSX lessons when it comes to trim. I know what to do and can fly the plane only using trim with no problem. But if you follow the lessons the guy says 'don't use trim first, use the yoke to get the right pitch and then trim to maintain that level'. So I try to do that, I pitch the plane how I want it then turn the trim.. however, even when I get the plane flying how I want it (which takes a long time of constantly trimming up and down) the nose suddenly starts moving up or down again. I'm constantly having to change the trim, even when I'm maintaining the same speed. But when you see the teacher do it he just moves the pitch to where he wants and then turns the trim and the nose of the plane doesn't move.. how does he do it? It goes exactly to where he wants it without having to fiddle with the trim and when he does get it right first time it stays there... mine still keeps moving up and down. What am I doing wrong.