{TAIL ~ A spring} is disposed interior of the channel and between the assembled pivot stump and {HEAD ~ housing} 
{ TAIL ~ A spring } is disposed interior of the channel and between the assembled pivot stump and { HEAD ~ housing }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD