I'd say that whatever Krylon uses as a solvent/carrier in their clear paint isn't compatible with Scalecoat II. I don't know whether the Krylon is an enamel, lacquer, or acrylic but the solvent in the clear was obviously too hot for the Scalecoat paint. A lot depends on how thick or wet the coat of clear was. Generally if you are using a hot solvent holding the can away from the model and spraying on thin coats works best. This allows the solvent to evaporate or disperse in the air so not that much lands on the model. The blue paint fading could be due to excessive humidity in the air or is just a characteristic of the paint. These big box store paints weren't designed for models, they were designed for household projects. Stick with model paint designed for use with models.
Ken
