Haven't notice these noise in the past while towing from storage facility to campsite about 3-5 miles. A loud popping/ratcheting noise from the hitch area. As long as traveling straight all is ok. When making a slight turn just a pop is heard. When making a turn either left or right into the campground a pop then a ratcheting noise. Can I get any suggestions of what this might be? I made adjustments with the sway-bar nothing. Would this be the ball on the hitch assembly needing to be coated with grease?