I'm very happy with the Focus pads in my He-500/4, but i have a slight problem; the right pad rotates freely while it's fully mounted --> The pad rotates every time i put on or pull out the headphones. I guess its a issue with the mounting space within the cups and not a fault of the pads itself. So, is there a easy way to keep the Focus pads in place in order to keep the fit angle fixed?
Tape. I use those photo stickies with holes punched on the old mounting rings (see modulor's jergpad guide on making them). For the newer mounting rings, some strategically placed tape should do it.