For anyone who does have their Grid, be careful with the wires when installing a top module. They are very thin, and they tend to "splay out" when the module is being reinstalled; I accidentally severed one by pinching it between the module and the relatively sharp inner edge of the case. I strongly recommend wrapping the wires with a twist tie, heat shrink, or tape, in order to prevent this from happening. It's not that hard to repair, but it's something you don't want to have to do.
