Oh and by the way I'm unfortunately still using the standard Tf-11 transmitter and RF-11 receiver.
I have the original servo and this situation doesn't occur with it.
Even if I get my ST D/R knob to lowest (turned all the way to the left), the issue will still occur just in a smaller scale and less visible. So there are no restrictions in steering and the issue still happens.
By adjusting the travel of the servo on the transmitter you mean EPA for separate left and right?
There is servo whining noise all the time, no matter what I do with it. When I turn it is whining and when I want to re-center it it whines, so I don't know what the problem is.