I broke the string on my Puma BB PCS Super (with 19g Gamma TNT2 Fusion Plus string). So I took out an old Yonex R-27 with a 5 yr old string job (Head Syn Gut 16g) from my bag. My hitting partner was amazed at how much extra topspin I can generate with that Yonex racquet. He said some of my groundies were unreturnable. Does anyone know why this R-27 can generate so much spin. The string pattern looks pretty dense and the racquet head is very narrow. The frame isn't very light either. Maybe the grip size? The Yonex is 4 1/4 and I normally hit with 4 3/8. Thanks!