You might want to do a check with the rig stationary to see how quickly the steer wheels start to move when you start turnng the wheel. What you're sensing as "play" in the system might actually be a very slow response of the front end to steering inputs.
I found our rig to be slow responding, but then I compared it to the 35' transit coaches I'd driven and concluded it was a yaw inertia issue and not really fixable. After a few trips, I got used to it.
Frank and Eileen
No longer RVers or FR owners