Landed (submerged) in about 5 feet of murky water. Was running as it went under. Took about 20 minutes until I was able to find something and then locate it to fish it out. Was still trying to run when I got it out (amazing battery didn't go). Disassembled, cleaned, dried. One motor only quivers, does not spin. I assume these are like a stepper motor and the associated board serves as a driver for it. Doubtful the motor itself is bad, hoping the driver board (if that's what it is) failed. Anyone have a spare one or a P1 available for parts?