Just wanted to add to the thread.
My current racquet of choice is my Volkl PB10 Mid. Completely love the racquet, the low flex rating, buttery soft feel and great stability I get from this stick.
The past couple months, I've been playing more than I have in the past year. I still love my frame, after hitting tonight, I found that I am not get the power off of my backhand side and serve that I would like, no matter what string I try.
After hitting for about an hour tonight, went into our shop, grabbed the lead tape and added about 5 grams from 10-2. Promptly went outside to see the difference. WOW. I couldn't believe the difference just a little lead made. All the sudden my serves came to life! I loved it!
I can't wait to go back out tomorrow and experiment some more