My 2016 Goldwing Trike has the adjustable pre load option just like the factory. After seeing a video of a standard non trike goldwing being adjusted, the rear end moves up and down while the preload is adjusted. I wanted to see if my trike movement was the same while using a marked stick. I went from 0 to 25 and back to 0 with no movement of the rear end. Can someone clarify if the preload on the trike is working properly? I’m suspecting the preload just compresses the springs on the trike and does not affect the ride height.