I just bought a ksix-one tour 90 and I measured the unstrung weight and balance. To my surprise, the unstrung balance measured 10 pts HL as opposed to the rated spec, 12 pts HL. I also realized my racket's grip end is different from my friend's stick. My friend's has a red cap and mine's got a black cap. Has any of you actually measured your racket's balance? The unstrung weight of my racket is 341 grams BTW.