Racer 250 F3 Controller Battery Tray

This is highly inspired by KDan's Eachine Racer 250 Battery Tray
http://www.thingiverse.com/thing:1289398
Great design but unfortunately it will not work for my quad since it came with the SPRacing F3 Flight Controller. One of the support legs of KDan's battery tray was blocking the USB port of the controller.

I modeled this entirely from scratch, verified all dimensions on the quad itself, printed prototypes, and ultimately changed a few things (like the mounting legs). I did duplicate