FPV/Drone battery tray (parameterized)

This is a parameterized generator for a battery tray (supposed to go with the hooks http://www.thingiverse.com/thing:1217263).
It's currently configured to generate a 160x55mm tray with retention tabs of ~17mm capable of holding a 4S 5000mAh battery with 2 20mm wide Velcro straps. Every relevant parameter is configurable in the top section of the SCAD file.

Update:The tray printed just fine with the published settings. There was an issue with Slicer not working right at 0.4mm. I changed it t