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