Hi, I have a twin elevator set up with 2 S9202s on either side. Whenever I move the elevator stick the left elevator moves and holds properly but the right one moves and then retracts a couple of millimeters. the blip is most visible at the extreme ends, both up and down but it also happens for small moves on the sticks. What can the problem be and how do I fix it please?

Regards,

Khozu