hello i have a Yonex Muscle Power 30 Racket and want to find the right string and tension combo to fit my game. Wish i could tell you what string I use now but cannot--I think I have 21 tension though--the stringers tell me limitations inn tensions with my racket--I dont know Anyway--i need more distance on my clearances and it seems as my sweet spot is quite small--a lot of of center hits resulting in lack of distance. my buddy has an old cheapo racket that gives me much distance when I need but noone here can really tell me what string/tension combe I need for my racket. can anyone suggest a good combo? I dont worry too much about losing smash power.