{HEAD ~ An engagement plate} 68 has a pair of throughholes 70, 72 to receive the larger diameter portion of {TAIL ~ rods} 36, 38 
{ HEAD ~ An engagement plate } 68 has a pair of throughholes 70 , 72 to receive the larger diameter portion of { TAIL ~ rods } 36 , 38
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH