Further features provide adjustable positioning of {HEAD ~ the wheels} and the casters for a selective preferred balance of {TAIL ~ maneuverability} and stability 
Further features provide adjustable positioning of { HEAD ~ the wheels } and the casters for a selective preferred balance of { TAIL ~ maneuverability } and stability
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH