XRAY - Model racing cars

I am having problems getting the steering centered on my T4-2013. I don't think it's the servo or the servo saver. I can't get the steering to line up straight consistently, when I have it on the setup board. Solutions anyone?

check for binding in the steering,is your servo ok? have any teeth been damaged causing it to not center,steering sytems generally have a small amount of slop

Check the two ball joints that attach to the inner links of the steering toe rods.

Sometimes they work loose, or the 3rd ball joint on the same steering arm assembly.

Use a tiny amount of threadlock if they have worked loose.

check:
-servo arm (stripped splines? right count?)
-stripped ballstuds that move slightly
-servo mounted tight on servo mounts

one other thing to add which has happened on other cars,and that is when making up the turnbuckles it can be screwed in to far and bind on the ball stud when fitted,another cause of binding