Alright, I'm fairly certain that the servos are fine because I noticed the problem right after I drove it around and was about to refuel (No I haven't crashed it in case that helps). The pack uses dry cells. and I did plug it in to the correct polarity and into the correct port. And it is a 2.4 ghz radio. I dont have anyting to test the voltage so im not sure if the connector works, but it is intact and seems fine.