I posted the message below in the LCD-X forum - I'll be doing the same for my HE6. Cheap and effective. YMMV.
I was getting a pressure point right on the top of my bald pointy head - rather unpleasant after about 30 mins. A seat belt pad, cut to the right length, fixed that. Also made the LCD-X a much firmer fit on my skull so I can move my head around a lot more without feeling like my headphones are going to fall into my lap. Also helps a little in distributing the weight more evenly over my noggin.
I am using these, cut to suit with a sharp pair of scissors. I'll be getting another for my HE6, which is also a little lacking in the comfort and fit departments for my shiny skull.
EDIT - should add - this option looks like hell. It wrecks the nice aesthetics of the headphone - that doesn't bother me one bit as I will take comfort over looks any day - but others might not feel the same.
Edited by TonyNewman - 7/9/14 at 11:45pm