You are trying to take them off? They are clipped into place so you have to put pressure on the pads to keep them from sliding around when you are trying to remove them and pull either up or down in a circular motion. I no longer have my pads clipped into place but I have them attached to the frame via velcro. This greatly tightens the bass and gives the cans speed with the open-back mod. That would take them to a whole other level for you if you every decide to test the mod out. Doesn't need to be permanent either. Can be tested in less than 15 minutes.
If not and you are just trying to figure out how the pads should be positioned; the thicker side of the pads should be on the back of your ears while the smaller side should cover the front of your ears.
I think I should give them more burn-in, before playing with them more :P
I'm already thinking of the JMoneypads for comfort....if there is a way to get the XB700's pads on them...now that would be epic :P