John, just joking with ya! I would say if you bought the spool new, return it for another. I, like others haven't had the problem with black. The bonding process did'nt take. Also are you waxing the bundle real well, not just the loop areas. This can help hold the dye in some. Wipe the whole length of the string with a rag and wax well. With an endless, your not handling the string as much. 450+ is a great material. And also I will say as archers and builders of these materials, we are the Quality Controllers in the field. Let manufactures know of problems, they appreciate our feedback. Good shootin Steve