Could you slip anything through easily into the unsealed portion? With my glasses off I do feel like there is less resistance around the pointed area but running my finger across the circumference confirms that there is still seal maintained around the areas pointed. Its just that it feels like the outer portion of the pads is not really touching(for the bottom side at least).

Both of these are only caused by the massive size of the hd800 cups.

any ideas?

You could try taking off the earpads and stuffing some felt between their plastic latch and the microfiber to address the problem spots.

Good idea tode...I am trying it right now with some thick creatology foam.  I stuffed in a thin strip all the way down the back of the cups and into the bottom to try to fill in the TMJ joint gap.  At least it feels like the pressure is more even around the cups, can't say if there is a change in sound though.

edit:  I think there may be something to this.  Seems like center image is a bit sharper and more focused.  I imagine it is something to do with getting the correct angle for the drivers.  I ended up making a tracing of the cup so that the foam sits flush.  If anyone is interested I will scan it in as a PDF to use as a starting point.  My guess is this will require some experimentation with different head shapes.

Soo.. How's the mod coming along?

Lagging behind the Leviathan and life stuff.  I do apologize for the wait, if I can clear out a good 3 weeks this summer I should be able to knock it out.

Look at it this way, it should be ready by the time people get their GSX mk2s.   

Maxvla got his GSX-MK2.

Max isn't an actual person.  Levi testing happening this week and/or next.