A series of passageways 63 extend radially between the inner and outer surfaces 60, 58 of the sleeve 14 above {HEAD ~ the level} of {TAIL ~ the lip} 62 
of
A series of passageways 63 extend radially between the inner and outer surfaces 60 , 58 of the sleeve 14 above { HEAD ~ the level } of { TAIL ~ the lip } 62
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH