These are some mods I have done. If you have any please post them. Made a battery tray from a sheet of ABS plastic, works well Extended the legs so that the camera would not hit when launching and landing on grass. Also turned landing skids inward so that it would still fit in the backpack. Pulled the 5.8gb video antenna for better orientation. Moded my charger so it could be used with external charger. Also refocused the camera, much better, will be getting new lens soon.