I got no topspin on my backhand at all. Its flat and goes often long ( I kinda scooping the ball sometimes ). I have problem with the power on highballs. I got a cramping feeling and can just make a moonball back. I dont have problems with my western-forehand. I got great topspin and power and thats the reason I can win matches, but I get really tired after because I have to run with my forehand all over the court! I play with eastern on my 2HB. THNX for your advice!