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