Airblast are front line flyers. They have little back line tension without bridles too.
Try riding more relaxed. Use your arms only to jump. Use your body to hold and control the kite.
Look for your "magic" bar distance.
I have rigged a bungie loop that gives me a good assistance on holding the bar at riding distance. (AB 8.4 without bridles).
I m using it extensively and am very happy with it. You could find some pictures and a complete explanation of the bar system (100%spinning leash bar) at
http://groups.yahoo.com/group/kitesurf/ ... g%20leash/
Take a look at the text file for better understanding.