A tubular support shaft 50 is fixedly attached to {HEAD ~ the first side wall} 14 of {TAIL ~ the housing} 12 and extends substantially between first 14 and second 16 side walls  
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A tubular support shaft 50 is fixedly attached to { HEAD ~ the first side wall } 14 of { TAIL ~ the housing } 12 and extends substantially between first 14 and second 16 side walls
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH