I got the carrying case for the 501s today. The bad news is, the propellers must be removed. I guess that must be the case (pun intended) with all drone cases? Plus, there is no way the case will accommodate the propeller guards that I mounted. So, I: 1) can fly without the propeller guards. (If I took them on and off I would lose those tiny screws pretty quickly). I think mounting the propellers and removing them is straight forward 2) Send the case back to Amazon and make a case that would accommodate the propellers and their guards. I guess it comes down to the pros and cons of flying without propeller guards. Thoughts. Thanks in advance.