I recently saw a thread about props being overly tight on new P4Pv2's. I bought a new P4Pv2 at the end of March and after my first 10 minutes of flying, I was unable to remove the props. They were difficult to get on and I tried several props thinking that they were the problem. Fearing I might harm something by going to far to get the props off, I shipped the drone to DroneNerds in Florida for repair. The problem was bad Quick Release Prop base plates. They had a hard time getting the props off, but once they replaced the prop base plate / locks, every prop went on and came off like they should. The part number that they replaced mine with were: Phantom 4 9450s Quick Release Prop Base CW CP.PT.S00034/CCW CP.PT.S00023. If you look for them online, they will come in packs of 2 or 4 sets.