HS 965mg servo problems
 

I bought a new 965mg to run in my 4wd short course truck. I also put in a new receiver/radio, an mx-3x. I have not made any adjustments to the radio such as dual rates, expo or end point adjustments. The problem I am having is that the servo occasionally binds for a second when going to full right. It will go about 3/4 of the way and catch/hum for a second then go to full right. Also when returning from a left turn the servo will catch just prior to centering for a second then will release and center. These problems seem to happen much more often when I quickly transition from a full left turn to a full right turn. Any idea whats going on?

It is getting 6 volts from a velinion esc.