{TAIL ~ A benefit} to the use of either manifold 401 or 401′ is an increase in allowed tolerances during {HEAD ~ assembly} of the unit 
{ TAIL ~ A benefit } to the use of either manifold 401 or 401′ is an increase in allowed tolerances during { HEAD ~ assembly } of the unit
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH