{TAIL ~ Pins} associated with the housing seat through {HEAD ~ selected apertures} in the bar at a determined position 
{ TAIL ~ Pins } associated with the housing seat through { HEAD ~ selected apertures } in the bar at a determined position
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH