MKS777 servo jitters

mks777The MKS HV777 was the first MKS servo that I tried, and I have never looked back since. MKS already known in other flying circles, such as helicopters and gliders, they have done an amazing job now on their plane series too.The fix so far is to remove the MKS servos and install another brand. I have tried changing voltages on the receivers with no luck also. Hher gauge wire