A plurality of circumferentially spaced passages 74 extend radially through {TAIL ~ the sleeve} 14 from near {HEAD ~ the base} of the gallery 72 
A plurality of circumferentially spaced passages 74 extend radially through { TAIL ~ the sleeve } 14 from near { HEAD ~ the base } of the gallery 72
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH