yeah my CP board is only 20". I found I was able to make it comfortable by putting both controls at a slightly offset angle. I thought about hiding the hinge, but I decided against it in case it ever needed to be adjusted (Which is convenient because I need to reset the hinge, it's off by 1/16", making it slightly off when its closed grr....everything else in the build went smoothly). The real trick was the whole order of operations for the build. The trick is to cut all slots first, then Formica visible inside edges, then assemble, then outside Formica. The brain of the beast is an ASRock ION 330 (Makes it a pretty bad-ass beast, I've been playing Mario Kart 64 on it all day). I'll take pics of it opened and closed once I fix the hing and make the back cover hinge piece.
*Side note: wireless keyboard and mouse are a must