Because springs 186 allow fluid extension ducts 182 to be axially displaced, fluid extension ducts 182 are always in {HEAD ~ contact} with {TAIL ~ the underside} of top plate 10 
Because springs 186 allow fluid extension ducts 182 to be axially displaced , fluid extension ducts 182 are always in { HEAD ~ contact } with { TAIL ~ the underside } of top plate 10
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH