My Plus Four is a 2025 U.S. and has no exposed screws on the outside of the base. Seems the door panel will have to be removed to detach the base. And I'm very reluctant to let my dealer do that since they've never removed a door panel on a 2025 before. I have no idea how to go about it myself. This is my 4th Morgan. The prior ones all had solid mirror performance. My other 2 cars, my truck and 5 motorcycles all have rock solid mirrors. My new Morgan driver's side mirror is unsafe. The reflections dance so much at speed that I can't tell exactly where the nearby cars are. Or how fast they are approaching. The dancing images make me dizzy. Sometimes I resort to shielding them from sight with my hand.