Sanded the spot putty and sprayed 2 coats of sanding primer on the canopy fiberglass fairing. This is the first use of the 2K sanding primer and it shoots really nice and sands well. Only downside is that it's about 2 hrs between spraying and being able to sand so it would be slow going if you need more than one application to fill the scratches etc. It's ready for sealer and paint now.