Hey guys, I got my Phantom 4 about 1 week ago. It's flown great. Camera/gimbal have operated as expected. Today I just noticed a grey piece of foam rubber right above the gimbal with a little red sticker on it that says "Remove Before Flight" with a caution logo. I've been flying with this thing all on all along without issue. What does this piece of foam rubber protect? I'll remove it before my next flight but should it be replaced after each flight is done? (ie should I put it back on when I put the gimbal lock/lense cap back on)?