{HEAD ~ The springs} 20 provide compliancy and overcome {TAIL ~ difficulties} associated with varying coefficients of thermal expansion  
overcome
{ HEAD ~ The springs } 20 provide compliancy and overcome { TAIL ~ difficulties } associated with varying coefficients of thermal expansion
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH