compensating for thermal mismatch between {HEAD ~ the master element} and adjacent portions of {TAIL ~ the mold} 
compensating for thermal mismatch between { HEAD ~ the master element } and adjacent portions of { TAIL ~ the mold }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL