Turnbuckle ?

If I understand your analysis, no, quite the opposite, once you find your happy (tension) place, you then slide the o-ring to 1/4" below the housing, this will help you monitor how your positioned ,as opposed to how you were when you departed. It's real simple to hook the bottom in the tie-down & twist them. On my last trip a walk-by visual made me aware that TC shifted a bit, because one front o-ring was down 1/2". Couldn't tell by doing a front or back visual but a measurement confirmed it. We were traveling the hills and dales of routes 40 and 50 through OH., WV.,MD.,VA.,and the coast. Lots of 10-15 mph switchbacks so I was watching them pretty closely. Harder to keep an eye on stuff like that with the chains. 50, The Loneliest Road & 40, America's Main Street are just as beautiful as the Blue Ridge up in the mountains. Inspired me enough to plan a trip on my motorcycle this fall, if this Covid s_ _ t ever goes away, if not we'll carry our hotel. Hope this helps.