As represented in the engaged positions of FIGS 2 and 3, the pins 84 seat through selected apertures 14 in the elongated bar 12 to define a selected overall length of the bar 12 extending in {HEAD ~ a forward direction} of {TAIL ~ the bracket housing} 
of
As represented in the engaged positions of FIGS 2 and 3 , the pins 84 seat through selected apertures 14 in the elongated bar 12 to define a selected overall length of the bar 12 extending in { HEAD ~ a forward direction } of { TAIL ~ the bracket housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL