{TAIL ~ Each foot bar support assembly} has an elongated slide plate movably supported within the slot, a hook plate fastened to the slide plate, and {HEAD ~ a foot bar support arm} rotatably and slidably fastened to the hook plate 
{ TAIL ~ Each foot bar support assembly } has an elongated slide plate movably supported within the slot , a hook plate fastened to the slide plate , and { HEAD ~ a foot bar support arm } rotatably and slidably fastened to the hook plate
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH