Has anyone had any experience with Problem Solver's Headset Reducers? I can't quite figure out how these things work by looking at the images or reading the sparse written description. Do they fit into the head tube as pictured (left one plugging into the bottom of the head tube - causing the internal diameter to be lessened? or is the right-hand one the one that sits at the base of the head tube, changing the diamter, allowing a smaller (1" in this case) headset fit around it?
For those of you who have tried this, does the finished product sit flush and fit well together? Any diagram of installation or picture of finished product would be super helpful. Thanks!