Buddy of mine picked up a Prince Warrior 107 recently. Through a local shop he deals with. He had had a Prince from many years ago and liked it so he got that. Under some time pressure, they put Wilson Revolve in at 56 lbs, which is the tension he prefers. Playing with it, he finds he can't control it at all. Previously he had some form of hybrid, which may be contributing to the issue. Assuming the racquet and the tension can't be changed, what might be a good string for him to get some control?