Sorry for such an elementry question but I am totally new to pulling a camper or anything else. Should the hitch ball gave a slight layer of grease or oil? I was greasing the sockets for the load leveling bars and started thinking about the ball. I went to hook it up for the first time yesterday and on the way to pick it up the master cylinder on my truck started failing. Got that fixed today and tomorrow I will probably have to cut grass so maybe Wednesday maybe I can hook up. Jim.