Ah, another convert to the short backswing. I hit my driver 20 yards farther since I switched to a shorter backswing 14 years ago and ss is still 105 and you'll find with a short backswing a stiff flex works better (when you get used to it) so don't change flex yet. I always make consistent "sweet spot" face contact and it made a total improvement in my game. Just keep that left arm straight and you'll love it in time.
(Geek should be here this week for a weekend of golf with sssmokin!! I gotta cream that guy!!)