Guys, I have a question about my call lanyard. It is made out of para-cord. I've had it a long time. The call loop knots, which used to slide in order to attach and remove calls, are all tight and stuck. Time, mud, moisture...how are these things so tight? So instead of me trying to pull these knots apart with pliers (I confess, I have already tried) are there any tricks to getting these loops to loosen up?