Dell Laptop Dock Spacer

I acquired a Dell Latitude E5570 along with a standard Dell docking station ([Dell E-Port Plus Advanced Port Replicator](http://www.dell.com/en-us/work/shop/dell-e-port-plus-advanced-port-replicator-with-usb-30/apd/331-7947/pc-accessories)); unfortunately, the guide in the back doesn't even come close [even while extended] in helping align the laptop when docking. Ah, the wonders of 3D printing!! I engineered a spacer that sits on top of the wasted space and provides a little cubby for odds'n'