missing crosses aren't necessarily mistakes. its just a different pattern that is favored by the stringer. obviously he shouldn't have been doing these variations unless at the request of the player... i have a missing 22nd cross (usual pattern is 22x23) on the patterns on my airblade superlites, but thats the way i like it. supposedly it makes the sweetspot smaller and more concentrated. but honestly, can anyone really tell the difference? not really. i just keep asking for it to be skipped plainly to identify my racquet from other people's. i've seen a missing cross 2nd from the top and 2nd from the bottom before too. so its not really a "mistake". the only mistake is that he failed to string to recommended patterns as suggested by yonex.
I have that on my NS8K at 28 lbs Hoping I'd achieve that natural high again, but before I had it restrung, it was the best racquet I've ever used (supposedly BG85@28). Most of my friends hated the racquet though.
Power is a combination of speed & strength, which is very hard to attain. Example - I might be able to squat 200kg but may not be able to jump very high and another person might be able to squat 100kg but can jump much higher because they can use all their strength in a shorter period of time.
What's the difference between Nano Speed 8000, 2007, and Nano Speed 8000, 2008. Is the colour, the only difference?
Yes, only the painting is different. However, there is a different in durability between the first year and the years followed.