sorry for the late reply. I don't get a notification unless I'm tagged in your post. That support piece, is meant to support the board when pressing on the up/down buttons, but I know it makes it a pain to assemble. I'm not sure if it's possible to bend the wall about 2mm, the board should fit past it. If you like, you can simply sand it or cut it down so the board clears. It isn't a critical feature, I just added it to the model, so you have the option.
three 0-80 x .1875" for the board
four 2-56 x .75" for the case
The case is only available as all one color, because Shapeways printing has a fairly loose tolerance. If you were to order both pieces separately, there's a chance that they wouldn't be flush. Sorry.
, thanks for helping out with the tech support :)