![Smile :)](./images/smilies/econ_smile.gif)
Before adding weights, you might also check your tongue weight and add more weight to the tongue if it is too light. 10-15% of the total weight should be there.
People always say you don't need to balance trailer tires "because people don't ride back there", but their answer actually supports the reason to balance because your stuff does and since it is getting bounced all over the place, balancing the tires may help. People think I am nuts but I tell them to do it anyway and get out of my face!
Don't get me started on passenger tires, people will string me up a tree.