Have just had it try and fly away again in PH with the 12x6Es (all brand new and balanced), it happened when I flew up high above some tall trees, and into a reasonably strong wind, which somehow set the vibrations off.
This is getting to be a big problem. It's been 6 months with this thing and I still can't even trust this copter for anything other than testing while I wait for some more different props to try.
I have the FC mounted on an aluminium plate, which is then attached to a lower delrin plate via squares of reasonably firm double sided adhesive foam that some gyros I have came with. Obviously it's not really working like it should. The GPS ground plane & antenna are attached to the frame separately so they won't make the FC platform oscillate.