Hexa odd engines warmer

[nisouck]

On my Hexa equipped with AXI motors 2814/22 and propellers XOAR 13x6.5 after each flight, I note the engines of 1.3 and 5 are warmer than others.
Do you know that?
What could be the reason?:dejection:

 

[Dewster]

I can only imagine that your craft is not balanced and it's causing the heavy side motors to work harder to keep up.

 

[nisouck]

Unfortunatly, not. It is well balanced.
If it's was not I suppose that only one side motors will be warmer.
In my case, that's odd motors. Even motors are normal.

 

[FlyEYE]

I notice that one of my motors spins slower on startup then the others (motor 6) and yes I did calibrate them all. I have not touched them afterwards.