{HEAD ~ A sleeve} is located within {TAIL ~ the housing} to provide support to the worm gears and maintain alignment of the racks during printing 
is located within
{ HEAD ~ A sleeve } is located within { TAIL ~ the housing } to provide support to the worm gears and maintain alignment of the racks during printing
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH