Hey, I just talked with a guy who owns a shop and is a official wilson dealer (don't know if you can say it like this) The thing is, I just talked with him about the wilson racquets and I said: If I want to buy 4 wilson racquets, let's say 4 K Blade 98, with the exact weight of 304 gr and the balance of 32.5 cm, would I be able to get 4 same racquets? He said: Maybe yes, maybe no.The thing is, that they don't do 1000000 K Blade 98 (for example) in a row.The do maybe 3000 K blades, then some other racquets, then some more and then other racquets and so on. He said, that the weight can be inclusive 308 gr if it's gone pretty wrong and that the balance can also move up or down. And as there were many people who wanted to exchange the racquet because it wasn't as they wished wilson now doesn't exchange them anymore, as it was to extreme. They say you have also to be tolerant until some limit... I heard about it, but never thought it would be that extreme.I mean 4 gr +- can make a big difference.Pros do not have the same problem as they can say how they want the racquet to be and they would have to do a special production.I guess that's the commercial problem --->THIS IS NOT ONLY ABOUT WILSON RACQUETS AS HE SAID THIS IS FOR ALL COMPANYS. What do you guys think?