MaverickSawyer
Acolyte of the Probe
I think this your answer. Correct movement is apparently a task of the maintainance checkout procedure. I coudn't find the flight manual. The final answer should be in there.
Edit: timestamps
As an actual business jet mechanic (albeit very newly hired and working on a different family of aircraft), that should have been caught before they ever returned that aircraft to the flight crews. A check of proper rigging should ALWAYS follow work on the control linkages to a flight control surface.