I've been hand-flying the 733 more recently, and it's a treat (when I can manage to get it right). At high speed cruising, near the barber pole (say, 330 kts at FL280), I've noticed the elevator trim gets really sensitive. A tiny trim movement that would change V/S by 10fpm at lower speeds will produce a 300-400fpm change. Makes it much harder to maintain a perfect cruising altitude -- I keep bobbing up and down +/- a couple hundred feet. Is this a RW flight dynamic or a bug?