Pure Drive Cortex woofer?

[babar]

I have a new Babolat Pure Drive Cortex. I will be using X-1 Biphase 16g to string it up, but I am not sure what the best tension range is for the woofer grommets. I liked the demo I tried, but the retailer was not sure what tension the demo was strung at initially. I seem to remember reading a thread about this before, but could not find it. Any suggestions on what tension would give me the best performance from the woofer grommets on the new Pure Drive Cortex? Thanks.

 

[babar]

So, I had the PD Cortex strung with Gamma Live Wire XP 17g at 58lbs instead of the X-1 Biphase. It feels a lot stiffer than the demo that I had tried before. Serves and volleys felt pretty good, but my forehand and slice bh felt off.

So, I guess 58lbs is not the optimal woofer tension. Maybe I will try 55 lbs next time. Any advice?