Hey dude can you explain how it was flying? was it vibrating? where the motors ever making a loud scraping sound?
I recently had a motor that would become too hot to touch after just 1 min of flight and I could hear that this motor sounded different to the others. It ended up being that this motor was slightly bent from the manufacturer and I had to buy a new one.
If your motor is too hot to touch or sounds funny try checking the shaft alignment