I bought a new in box but 7 year old Hensley this week from a local guy who never installed it on his trailer. Did the maiden voyage with it Friday and it is a world of difference from my old Pro Series dual friction bar setup. I have a LaCrosse 329 that is 10K pounds lightly loaded and 38 feet stem to stern and it has been a handful at times even for my 2014 Ram 2500. I suspect that I need more drop on my stinger (trailer is a couple of inches nose high) but it still pulls so much better. Side winds and interstate traffic were not even noticeable, and the slight continuous trailer wag (a constant couple of inches back and forth at the tail) is gone. Another plus is that I can open my tailgate without baching it into the jack. Even a used Hensley is not cheap, but they really do work well.