There were a few different teams that had drop down intakes. 177 and 973 had identical intakes. This is a video of 177 at CT Regional, even though we didn't shoot much (due to sticky new balls for elims) it gives you a good view of the intake rollers.
http://www.youtube.com/watch?v=z9IZn...feature=relmfu
One problem with our roller system was that The first stage (lower tower and intake) could not handle 2+ balls at once, it would jam the roller system. But it was useful for getting balls from under the bridge and in corners.
I will upload a video tonight and link it here of our roller system up close.
I also believe that 33 had a roller system close to this, but it was concealed under their utility arm.