Did your first stringer use power pads on your strings? They are very small foam discs that you put under the strings, on the outside of the hoop. They also save the string from early breakage where the string goes through the frame at a sharp angle. When used properly, they widen up the sweetspot a bit and give you more feel for the ball.
4 racquets: Dunlop, Dunlop, Dunlop, HEAD
Alpha Pioneer DC Plus stringer