Is there any way of stopping the motors after a landing when they don't cut off?? Seemed to have a perfect flight yesterday, precise RTH was set, good GPS lock etc, flew home flawlessly but after I had it landed (on a hele pad) the motors didn't cut out. It started to do a bit of a jig so tried to press the button on the battery, in the process caught my fingers which caused the motors to stop, but even then it took a while for everything to cut out. When I looked at the log it shows a landing altitude of -1.1 then -0.8m rather than the usual 0m. If anything, I'd have thought this might have caused to motors to cut out before landing. Any ideas?