[DukeNasty]

Is that because of the forward bending of the shaft at impact??

My assumption is that you are hitting the ball in the part of the clubhead arc that is past lowpoint. Again, that is only my assumption and I don't have any type of scientific data to back me up, but I do know for a fact that more loft yields more spin which at a certain point begins to kill my distance (as measured using the same club/shaft combo with different lofts on the monitors at the PGA superstore).

E.