Hello experts! I am a complete noob when it comes to quadcopters as I proved when I crashed my Phantom into the pool. It's not my fault, the evergreen tree that tried to eat the Phantom spit it out there. Don't worry, everything is working great (after a long drying out period) but I have one motor that does not spin. Believe it or not, I can go through complete pre-flight and get gps lock and start the motors, except for motor #3. The only unusual thing (besides one rotor not spinning) is some beeping. Two quick beeps, silence, two quick beeps, silence. I also notice that when I slowly spin the other motors, they spin with no friction. Motor #3 seems to have some resistance. There seems to be a very mild crunching, very much like my knee before I had surgery. So experts, my medical plan does not include quadcopters, so I through myself to your advice! Thank you in advance.