I want to put a set of new and better prop guards on my phantom 3 standard and wonder who makes the best ones that are strong and not too flimsy or are they all made this way..Yesterday when I was landing with auto landing it came down a little too fast and bumped the grass a little hard and tipped over to one side and the carbon fiber props I have on it cut the middle support brace on one plastic guard and cracked another.I have had my standard for 4 years now and I never had auto landing come down quick the last 5 feet before hovering just above ground level and gently touching down.Has anyone ever had auto landing on their drone ever do this.Right after I removed the 4 prop guards and flew it around more with multiple landings and every landing was soft as butter.Curious as what caused that one quick drop just before touching down.My battery life was 27% at the time of this so it wasn't a power issue.Real calm out yesterday evening with zero winds also.I'm thinking maybe interference from the big tobacco barn at my dads farm that's covered with steel maybe had something to do with it possibly.I had no warnings on the dji go app other than low battery came on but i had 27% left when the "not so soft" landing occurred..Any input on this and whats a good place to get some decent prop guards much appreciated..