The steering assembly includes {HEAD ~ an output gear} which is positionable dependent upon {TAIL ~ an operator commanded degree} of turn 
is positionable dependent upon
The steering assembly includes { HEAD ~ an output gear } which is positionable dependent upon { TAIL ~ an operator commanded degree } of turn
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH