When you accelerate, the track from the sprockets down goes slack ( the top of the track is in tension), allowing the center shock spring to extend the rails to the limit the straps allow it....giving you transfer and ski lift, or better flat harder steering, under acceleration, depending on how tight.when my sled is sitting flat on garage floor the limiter straps are loose no tension. I get that if you tighten them it increases ski pressure but wouldn't that have no effect if the straps are still not pulling the rails up ? OR when the sled is in motion is it totally different then when sitting there in the shop does that little bit of slack in the strap disappear as soon as your moving ?