I too have a mavrik driver. When fitted by a Callaway fitter,( actual Callaway ) we came away with a 9 * head set at stated loft and neutral. Swing speed is under 80 mph. I questioned him and he said A) The driver is difficult to draw , B) my angle of attack is just about 2* upward. More loft would give me too much spin. The shaft is A flex. If I wanted higher loft he stated a stiffer shaft would keep my spin down. The point is if you were fitted to that club the setting would be correct. I spent a long time with him. He was right. Alway get fitted and question everything. I’m not making negative comments but trying to demonstrate how crucial a fitting is.