As the gripper approaches the knife, {HEAD ~ the drag} may be placed on {TAIL ~ the gripper} thereby compensating for pull of the blade 
placed on
As the gripper approaches the knife , { HEAD ~ the drag } may be placed on { TAIL ~ the gripper } thereby compensating for pull of the blade
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH