I have a Wishon 919 driver with a Wishon White Plus R shaft. I have a mid-80s swing speed with a moderate to fast tempo. The White Plus shaft is an 80 gram shaft and feels a bit too heavy. Ideal shaft for me likely lies between Wishon White Lite (65 gram) and White Plus (80 gram). Is there someone out there familiar with Wishon shafts and bend profiles that could offer replacement suggestions?