I know that flex has everything to do with trajectory. At 71 I recently purchased a set of mizuno 919 hot metal irons with project X senior flex shafts. My launch angle is crazy high with these shafts and the lofts are fairly strong. Is there such a shaft as a low launching senior flex shaft??? My swing is one degree out to in and two degree's down with these irons. I don't take divots and I don't want to increase hitting down on the ball, those days are long gone. I play the ProV1, last years model, I don't like the new Prov1. Tried the new ProV1X and didn't like the feel. I need to stay with graphite if you have a suggestion. Thanks.