I demoed the KBlade 98 and I liked it a lot. It did not feel as light as I expected. The only problem was that I thought it felt a little unstable when returning heavy serves (maby because of the light weight ?). Have any of you tried to customize it. How can I add 15 gr of weight without damaging it's feel and without making it more head heavy ? Anyone tried customizing the KBlade ? Thankful for some advice.