Hey, I am currently a Junior in my high school tennis team, and I have a racket though I am thinking maybe it is a bit too heavy, and maybe I should consider finding another lighter one. The one I have is Head Liquid Metal Instinct Tour XL. I was wondering if whether I should be worrying about the weight, or maybe its all in my technique? Note, I am not a big build, I am probably shorter than the average tennis players I'm about 5'7" and weigh about 110. What are your thoughts? Focus on better technique or consider a lighter racket?