As it turns out, they're now more comfortable than ever, and I've no problems (so far) with fitting issues, except that there's some excess padding hanging off the main cup on the bottom end (though if you prefer it to be excess on the top, you can easily switch the position of the pad.
It's so simple a mod, even a cavema... oh, you get it. You basically have to take off the ring which attaches to the body, off, and then slip the ring under (one side, either your top or bottom, it doesn't matter) the plastic portion of the Beyer pads. You then stretch the plastic a bit, over the bit(s) which the original pads were slipped onto, and of course, you'll have to create a slit for them to fit. I simply stretched, pulled down tight, and used a razor to make a fine slit and simply inserted when done.
I think it's important to note that the best results are had when you only do this to one side, and not both. If you try and pull the plastic over all four positions, you'll have some ugly and bulky slack left over in places, which you'l be forced to try and either glue down, or staple. And this makes things complicated when you try and snap the pieces back into the headphone cups. So I'd suggest doing only two slots, and then neatly gluing the residual plastic down in an even manner.