I have been using 10lb reaction tackle braid, and kast king 6lb fluorocarbon. I used a uni to uni knot, 11 wrap on braid and 6 on fluorocarbon. I have been using this for bluegills and today when I was rigging up I pulled the lines and it broke with just a little bit of force, I mean like less than a 2 pound mono. I resorted to having to use some yozuri 15lb that I had laying around. what am I doing wrong?

thanks
flymoron