Recently purchased: 1. Brand new P3P from DJI.com (arrived 9/14/15) 2. UAV Strong Arm Kit I'd really prefer not to use the strong arm kit if I don't have to. 1. I've heard there was a new shell design in recent shipments, does anyone have pictures of the new shell design? Or comparison between old and new? 2. Are the differences on the inside or outside of the shell? I've attached a shot of mine. 3. Has anyone used the strong arm kit from day 1 ever seen any stress cracks? 4. Would you need to remove the strong arm kit to check for stress cracks? I'm trying to decide whether or not to install the strong arms kit or to take my chances without it. If it develops cracks, I'll just send it in for warranty repair. I assume it'll crack within the first year if it is going to crack.