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