Everytime i initialize and the esc all beep there is always one that starts a half second after the other three. Its almost like that esc is getting its initialize signal a half second later than the others...is this normal?
Mine does that too, I'm also interested in hearing about this. It didn't use to do it, but it doesn't seem to affect the performance of the drone. Sorry I couldn't be any help, but just know you're not alone!
I once got a motor which spinned not like the others and this was really damaged. But now I got a motor too, which starts 1/2 seconds later but is 100% ok.
You can find out if the motor is ok, if you start the Naza and let the one and another motor rotate and touch it on the bottom if you can feel hard vibrations the motor is damaged.