We have a 1969 c50 bobtail and tried to put a hydraulic Westfield drill fill auger on but found out that it is a single cylinder hoist with no reservoir. Since there is no reservoir there is nowhere to return the oil. Has anyone ever run into this? If we can't solve this we want to sell the truck. (Under 30,000 miles, steel bed, real nice 4&2, 350 engine)