This movement causes the compensating spool to reduce {HEAD ~ the opening} of {TAIL ~ one row} of cross sectional holes and increase the opening of the other 
of
This movement causes the compensating spool to reduce { HEAD ~ the opening } of { TAIL ~ one row } of cross sectional holes and increase the opening of the other
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH