So I bought a new racket, first two days it worked amazingly, 3rd day I felt sudden loss of control, I felt the core got softer than it should be, accidentally left my bag in the car one day, anyway, was gripping last night and kept the racket in the Air conditioned room overnight, now it feels back to normal…
Leaving the racket on a car, especially if exposed to the sun in a hot day is the worst you can do.
I don't think the materials will come back to their original state, but I'm not sure about that.