I recently started fly fishing again after several years. I now have a problem with my basic cast in that the fly and leader, coming out of the roll, is striking the fly line during my forward cast and/or putting knots in the leader. It seems the only way I can control this is to bring the rod to a horizontal ( 9 o'clock) position during the forward movement. If I stop the rod at a 10 or 11 o'clock position the fly/leader strikes the fly line constantly. Any ideas on what I'm doing wrong?