When I first started using the gizmo I was getting a noticeable thumb in my bows which I didn't like. I slightly changed the way I use it now. I first get the tiller adjusted with the gizmo while it is still about 7# heavy or so, I then switch the gizmo to the outer 1/2 of the limb which I like to bend slightly more and just work that area. Any final adjustments in weight I go into the fade for. I use about 12" to 14" of handle and fade area and about 8" of stiff tips so I don't have a whole lot of working limb I need to make adjustments on. It saves me a lot of time. Past couple of years I go from floor tiller to brace to gizmo and never even fool with a long string anymore. If I am working osage I use only a scraper for adjustments on other woods I may use a rasp.