{TAIL ~ The shim} is then formed to include a feature on its surface which complements the surface profile of {HEAD ~ the assembly surface} 
{ TAIL ~ The shim } is then formed to include a feature on its surface which complements the surface profile of { HEAD ~ the assembly surface }
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 HEAD HEAD