Thank you for the suggestions. All the holes are still in perfect shape and as stated, the spring bars are the components that seem to take a beating. I am on my second set due to going to heavier hitch weights but there always has been noticeable straighting of the bevel on the bars. I will leave the head alone for another 80 k and invest in another set of spring bars as we are planning on a 9 month trip starts this fall. Routine inspection of equipment is paramount to safety. Thank you again. I have been a member of this site since 2003 and it is so valuable to bounce thoughts off a large number of people.