Currently I string my Wilson N6.1 Tour 90 racquet with Luxilon Big Banger Ace 18g at 54lbs. (10% lower as recommended by Luxilon) in the mains & Tecnifibre NRG2 17g at 60lbs in the crosses. My Wise ********** is set to pre-stretch 10% with constant pull. I am going to try Babolat Hurricane Tour 17g in my mains. What lbs. should I use for the Babolat HT 17g to give me the same feel/playability as the Luxilon BB Ace?