Fiiiinally got around to removing the plastic license plate mount assembly and replacing it with a smaller metal assembly. Product link below. I will probably go back and hack the metal sub-fender so I can tuck the new mount higher up under the fender, but already I'm very happy with the change. The LED built into this thing is about the same brightness as the brighter zones of my headlight! I also added some vinyl washers (actually they're those little bumpers you put on the feet of your sofa or on your cabinet doors, with a hole punched through) to hopefully reduce the amount of vibration transferred to the license plate and save me from needing a second trip to the DMV for a third license plate. The replacement I bought has supports for turn signals if I ever decide I'd like to relocate mine. We'll see. In follow-up posts I will include photos and explain what you need to do to remove the plastic assembly. It's not immediately obvious, to say the least.