The flight control check performed as part of the taxi checklist wouldn't have any way of showing what the actual control surface position is...because the actual controls surfaces don't move...
I'm only going to say this one more time. They do (at leats on the 717). The only issue is the Maddog series doesn't have any indicator to show it. The 717 does, and part of the taxi control check is to note that each elevator moves in concert with the stick, as indicated on the FC display.
Get out on the stairs and tell your effo to push and pull to the stops. I bet you'll see the elevators moving. There must be some sort of followup from the control tab circuit that moves the elevator.