I just purchased a 4525-520 Ultimate and I am using a CC Edge 160HV - this is the first Scorpion motor (used to KDE motors) and I am finding very little information outside of the 8 PWM setting. I emailed Castle and they said leave everything at default except the PWM. I am using the vbar governor and I seem to be getting a little "pulsing" sound (RPM change?) out of the motor. Any recommendations?