dpenrod,
You say there is a nick close to the end of your fly line. How close to the end. If within the first couple feet you could probably cut the line off at the nick and never notice the difference. It really depends on how close to the end. I know that I have cut the end off of my lines in the past, sometimes as much as 3 foot, and never noticed the difference. Just my opinion and something I done and maybe you could try if the nick is close to the end. Others may tell you different and maybe tell you to not cut any off, but, I did and it still worked plus it was sure cheaper then purchasing a new line. After all, what have you got to lose.

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Warren