I bought a yonex rdx500 in gripsize 4 3/8 because that was the grip i used when i played the yonex v-con 17. But i noticed that the gripsize was much bigger. I took off the replacement grip and compared the bare handle with that of the v-con 17. It was much bigger. Even a friend of mine who has a rdx500 but then in 4 1/4 gripsize has a bigger grip than the 4 3/8 size of the yonex v-con 17. What has changed and why do they run more than a size bigger now? Was the gripsize incorrect in the past or is now incorrect. Just curious.