This is desirable as frequently the opposed sides of {HEAD ~ the tractor} will deflect in {TAIL ~ opposite directions} 
This is desirable as frequently the opposed sides of { HEAD ~ the tractor } will deflect in { TAIL ~ opposite directions }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL