On my Graphene Speed Pro (18x20) I had Wilson Natural Gut in the mains (60lbs) with Hyperion 1.18 in the crosses (54lbs). I'm now going to try Babolat Tonic+ 16g in the mains and a thicker hyperion (1.25) in the crosses. I have three questions that are related. 1) What difference will I feel if I string the Babolat at 60lbs and the poly at 54lbs? 2) What difference will I feel if I go 62lbs (mains) and 56lbs (crosses)? 3) What difference will I feel if I go 58lbs (mains) and 52lbs (crosses)?