A first pair of {HEAD ~ engagement rods} 36, 38 are fixedly attached to {TAIL ~ first plate} 14 
A first pair of { HEAD ~ engagement rods } 36 , 38 are fixedly attached to { TAIL ~ first plate } 14
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH