I'll soon replace the strings on my Wilson Rok (very dense 18x20 on a prestige-like 93 sq in). I want to increase the sweetspot, and I'll probably put thinner strings (from 1.30 to 1.25 syn gut, no poly or nat gut for me). Is this change in thickness enough for me to feel any difference regarding forgiveness or should I also lower the tension? If so, how lower should I go (currently 50 lbs)? SHould I pay much more to try an even thinner gauge? Or maybe I should only lower tension and keep a 1.30 basic syn gut string?