I suggest you send it back for a check any time you suspect it is not quite "like it used to be". If anything seems not as tight as it was etc. I have had Blue Ox look at mine several times over the years while at rallies where they were vendors. Each time they checked it over , replaced some spacer washers etc. This past summer I watched as the tech started taking mine apart and as he extended one arm it was readily apparent that there was no "tune up" going to make this like new again so I replaced it. I think Blue Ox recommends that you replace theirs around 75,000-80,000 miles. Mine was a little beyond that.