I just purchased a set of aluminum motor mounts for the Phantom 3 advanced. I am looking at the length of the screws included. They seem long, and I don't want them running up into the motor and hitting on the magnets. My question is, has anyone installed these and if so do you recall how long the screw measured in MM? Also I would presume you need to use some "blue locktite" on the threads prior to install. Any advise from those who have done it would be appreciated. I got the this set here from ebay CNC Aluminum DJI Phantom 3 Reinforcement Plates Motor Mount Protector Silver 4pc