I have a new PDR and I popped a string today. My brother gave me his old klippermate, and I'm all ready to give it a try. I was going to practice on an ancient Prince Graphite Mid that my brother uses as his third backup racket (it has lived a good life, but it's pretty much dead at this point, and doesn't really care what happens to it now). But then I popped a string on my Babolat, and I do want a new string job. So... provided that I'm very careful, what do you think, can I start with the Babolat, or should I do this first on a racket I don't care very much about? (or, I might just ask my brother to come over and show me how, he said he was willing to do that - in which case I might as well string the PDR).