Use an epoxy splice. Thread a piece of unwaxed dental floss inside one section of line. Strip about an inch of coating off the other section. Pull the dental floss through a puddle of 20 minute epoxy to get enough on it to carry the epoxy into the first section of line. Soak the cleaned off tip of the second part in epoxy and pull it into the core of the first section of line. When the coating meets the coating of the first part, trim the dental floss. Hold strainght until the epoxy sets. Done!

It sounds harder than it really is.

fishbum