My bass has been buzzing terribly, and the setup guy looked at it today, and said (among other problems) one of the strings is bad. And you can see it, it wiggles funny. He also said that when he does a setup for people who insist on using DR strings, he won't guarantee that they'll be happy with the setup, because he's encountered so very many bad DR strings. He was encouraging me to try a different brand. I have no intention of changing brands, but it isn't cool to waste a brand new string. As far as I know, I've never gotten a bad one before this, but maybe I just didn't realize. Are bad DR strings really that common?