So I've played with the RF97 for the past 2-3 years. My ground strokes with it are fine but my serve has always been a bit lacking. Then I recently tried out a lighter racket, the Clash 98 and I suddenly felt like my serves were a lot better since I felt like I could swing the racket faster. I feel like decrease in weight was the reason that my serve was faster. Which made me wonder, do I just need to get stronger so that I can serve with the RF97 better, (I do question how much difference a 31 gram diff makes tho in terms of required strength) or if it was mostly just my technique that's lacking which prevents me from swinging it on serve as freely.