so I had some runs again today. I tested timing of 11,35 degrees, and the temperatures were much better. Worm summer weather with about 30 deg. c, the motor got between 60-69 degrees, round about 156 f. This is ok, still I use a strong fan.
I think there is some more torque compared to the 2000kv Leopard, which is aready a great motor. So far, the x801 seems to be a great motor.