I ordered replacement cushions for my OE2 Headphones. The edge of the earcup cushion skirt that goes into the slot behind the earcup flange is made of a different material than the original cushions. The original is made of a leather like material that makes it easy to install. The replacement set has an edge made of a plastic like material that does not stretch as easily so is more difficult, if not impossible, to put on. I tried for over an hour and was unsuccessful. Anyone else have this difficulty?