I have been climbing for about a decade, and and I can say that without any doubt, the Sterling Evolution Velocity 9.8mm is the worst rope that I have ever used. Every time I used it, the fuzz would become worse and worse. After only one week of use the fuzz had revealed the core, necessitating the rope to be cut. I contacted Sterling, and even sent them the damaged section of rope (from Australia), and their response was extremely disappointing. They were extremely slow to respond to my emails, and when they finally got back to me, they advised me that there was nothing wrong with the rope. I have heard others say that they are very pleased with their Sterling Evolution Velocity rope. So perhaps I bought a lemon. Regardless, I am going to avoid buying ropes from Sterling in the future!
It sounds like a very useless support department. So you eventually will have to spend money on a second rope, because they do say the rope was alright. I would recommend you to suggest them to tide up with such rope at 40m high.
worst rope ever!