{TAIL ~ The assembly} 1, wherein the desired average fly height is lower than {HEAD ~ the unaltered average fly height} 
{ TAIL ~ The assembly } 1 , wherein the desired average fly height is lower than { HEAD ~ the unaltered average fly height }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD