Recently I had to access the main circuit board for motor replacement. Despite storing the tiny fixing screws, they vanished. When reassembling, with the drone assembled apart from the screws, I secured the cover with very small plastic ties, located at the midpoint of the 'legs', on to on each leg. The 4 ties weigh less than a gram. The ties can easily be removed by snipping them with small wire cutters, and are easily sourced at any craft shop.The legs retain the flexibility to withstand hard landings, and the safety 'clip'operates normally. I hope this hint helps any flier having to make repairs on the field. Regards, Icarus123
