The inside lip of the upper windshield fairing has been sanded a couple of times, but it still had some irregularities I want to take care of. Mixed up a fairly thin micro/cabosil mixture and brushed it on the inside radius of the fairing. Went back 10 minutes later and smoothed it with a fine, clean brush. I'm hoping that tomorrow the surface will be easily sandable into a nice smooth radius--or at least it will be a good start on the project.