[blipstutter]

I don't think the riff was ever made public even though it's a poorly kept secret with people who know them. I will say it was a private matter which unfortunately filtered into their work. The BB's have hinted to that, when they said how much more efficient it was to work without having to argue over every detail. I don't know of any other public recognition as to why Mario isn't with them, but I will say, Adam, and the Beastie team probably wouldn't want the sticky details posted in this forum. As it is, this cryptic post might not last.