coot,
I have run into the problem of superbraids slipping on the drum.It is a reel pain in the butt.All you can do is find a section of river with enough space to walk all the line off the reel and then reel it all back on tight.I always use backing now!
I use my improved clinch Knot and have not had any problems.I am usualy happy when the stuff finaly does break!