Today i was playing a double game, then this one moment where I had to rush to return a drop shot and my racket tapped the floor once and when I continued playing, my swings felt heavier and slower. Then I start realize the head of my racket just got heavier. I checked every spot and grommets, nothing is wrong. I showed everyone there, and they tried hitting with it and agreed that it feels head heavy. I've been using it for months and I'm sure it's head light. Did this happen to anyone here?