I am currently using a wilson k blade tour strung with technifibre 17 x-one biphase mains, and 16 nrg2 crosses, can't seem to get the power out of it i need. I ordered a set of 16 gauge x-one biphase and 16 gauge nrg2 to string two of my rackets with, I went up a gauge to add more power but how much tension should i drop. I had it a 57 lbs but with a kblade tour its not enough power, i was thinking either 56 or 55. please let me know what you think. Also I will take string recommendations. Keep in mind that I do not hit flat shots but I am a baseline player.