DJI Phantom V1 Replacement Body Shell Issue (Or Is It??)

[FC40 Pilot]

Hi. I was just in the process of switching over from my damaged V1 body shell to a new one to find some strange moulding , that looks to me like what should have been rejected before it left the factory. Its on all 4 motor mounts that ive noticed it ( see pics ). Ill include my original body shell with smooth mounts compared to the not so smooth new body shell mounts. What do you think? Can anyone see if they have the same in their V1?
Many thanks

 

[ElGuano]

My original shell has a couple like that as well per leg as well. Dunno what it is, but it doesn't affect flight.