I've been so darn careful, but finally got a little over confident and flaked out and crashed into some tree branches. If anything good comes from this - unit tumbled off a few branches on the way down, but enough to rip the camera off and the pop the battery out. I learned a lot from this experience and it has made me a better pilot, instantly! I changed all the props, and qualified that the camera survived (it did!) The battery works, but has to be forced into place, so I am going to stop using it. I went out for a careful flight yesterday and things seemed ok, although couple times I seemed to lose GPS signal briefly. Questions... 1. Should I recalibrate compass 2. do I need to recalibrate the unit, I saw a video on how to rebalance the system after problem 3. Should I open up and insepct solder joints 4. What can you recommend I would enjoy some feedback concerning protocol after crash so I can get back to feeling comfortable. Thank you.