We are trying to lift the pucks up using a conveyor belt. We have used some of the lego conveyor parts we had lying around, but we are having a hard time finding where to buy more.
I think this might be them.
http://www.legoeducation.com/store/d...93&c=1&t=0&l=0
but I'd really appreciate it if anyone who has built a conveyor with lego and remembers what they used could help out before we plop down the cash.