ive read countless posts about how luxilon kills the arm, especially at higher tensions. i just got it strung at 60 lbs, and it feels great. no problems with the arm either. plenty of power and feel. i put it in my nsix-one 90. i play a baseline game, with a semiwestern forehand and a two handed backhand. heavy topspin on forehand, flat blackhand. any ideas why my arm isnt killing me now?