ok so currently i have a cleveland launcher 460 ti (2005 model) with 9.5 degree loft. the shaft is the default reg flex 55g (gold color). i bought this off ebay without ever trying it. i originally tried a 2006 launcher at a demo day with an aldila nv shaft. i forget the flex but it may have been regular. i loved it at the demoday and bought one off ebay. ive had this driver for 9 months and its been decent. i can hit good drives off it sometimes. today i hit two drives that were 280+ but i have to choke down on the grip and swing at maybe 70%. when i swing as fast as i know i can under control, it will slice. everyone that uses my shaft calls it a grandpa shaft and wiggles it around like a wet noodle. now im starting to realize that maybe it is a little too flexible. im 21 years old, 6'1" and 190 lbs. and i go to the gym everyday (can bench ~300lbs) so it occured to me i may need a stiffer shaft. i haven't been fitted but i went to a proshop where they had the system where you can hit balls and a screen shots your ball flight and speed and everything. i didn't measure my swing speed but ball speed was ~160mph and the guy said my swing speed is usually 70% of that. he watched me swing a few times and said without a doubt i need a stiff flex shaft. so is the flex shaft the cause of my slices? what shaft is good? ive been looking at the aldila nv-65 stiff shaft.