Need a little advice here: my P4A was recently returned to DJI for "repairs" as it literally dropped from 150 feet on its way home. DJI requested the return. They were most informative as to when it arrived and it's repair status and mail home-no charge as it was under warranty. Very nice! The returned drone, battery and props were all "new". No indication despite my request for one,as to why my bird dropped out of control . Just flew the new guy for the first time today but I'm losing video at about 800 feet. We're talking clear air, line of sight, no trees, nothing to interfere. I've adjusted the controller antennae and checked controller to see if there are adjustments to be made but see nothing there. I'm new at this, but my original P4A easily flew out a half mile without video loss. I never ventured beyond that though. Controller is set on P mode. I'm stumped. Same controller but "new" drone. Hmm!