Slots 14 include {TAIL ~ flat reference surfaces} 18 machined in member 12 in {HEAD ~ controlled parallel relationship} 
Slots 14 include { TAIL ~ flat reference surfaces } 18 machined in member 12 in { HEAD ~ controlled parallel relationship }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD