Ok i broke down And put the DS821 Servos in my Extra 330L on the elevator. these are suppose to be new servos. I have an airtronics RX in the plane that the servos are connected to it is a PCM modulation. radio is on PCM1. Now i'm wondering if i need to get a different RX Due to the flucuation that is noticed. the Radio is on and the RX is on and the servo will Move back and forth flucuate very slightlt and the other one jitters. is normal for digital servos? or are the servos just junk and basically i got Screwed again and purchase some worn out junk.
Not saying that the servos are junk if they are new but these obviously are used or i need to use a different RX.
Video of my frustrating problem
http://www.youtube.com/watch?v=XO9ULwKkvzs