As best shown in FIG 5, {HEAD ~ the thrust plate} 28 is advantageously molded as a separate piece 36 which fits within the distal end 30 of the shaft 26 to form {TAIL ~ the plunger} 20 
As best shown in FIG 5 , { HEAD ~ the thrust plate } 28 is advantageously molded as a separate piece 36 which fits within the distal end 30 of the shaft 26 to form { TAIL ~ the plunger } 20
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH