an inlet port in said eccentric adjacent one corner of said pad for supplying {TAIL ~ hydraulic fluid} to {HEAD ~ said gap}; and 
an inlet port in said eccentric adjacent one corner of said pad for supplying { TAIL ~ hydraulic fluid } to { HEAD ~ said gap } ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH