aye spinbalz..that's a good thought, but they're not going to fit. I like the idea of manufacurers offering a frame or two with 2 diff types of bumper kits. it can dramatically change how the racquet plays. wilson tried that a ways back and i guess it didnt prove to be successful. I've suggested this to Volkl in the past. I know you can always add lead, but the effect isnt nearly the same as having weight added all around the head, or removed from all around the head, like what i've done to my Gen1's.
