So just recently I put together my very first drone. I had a couple of flights and then 1 of my motors started shaking back and forth. I Un-Armed the motors straight away and then I went and checked the connections. It looked like the motor had a lost connection so I went ahead and fixed the connection. Once I went out to test the quad again the motor didn't shake/vibrate this time it just made a noise and didn't move at all. So I contacted the seller and they agreed to send me another one for free. Then I went out and tested it again but this time a different motor had the same problem. Thinking it was the connection I checked it but there was no lose connections this time. Do you guys think they're just bad motors or is it my newbie mistake? Can motors just die that easy if 1 wire is loose? Here is my part list below. APM 2.8 Emax XA 2212 980 kv Motors Simon 30A Esc's Realacc / Matek HUBOSD PDB Venom 8000 mah 20c 2 cell If you need any more information please feel free to message me and I will be happy to send anything that will help.