I have experienced Scalecoat setting up in the bottle after mixing with thinner. A few years ago I painted some How Ordinary scale GP units in the T&P Swamp Holly Orange and Black for a local hobby dealer. After mixing the color I added thinner before spraying. About 10 days later after assembling the locomotives I needed to do some slight touchup with the red sable. When I opened the bottle the paint was gelled. It seemed as though the thinner was a catalyst that had cured the paint. At the time I did not investigate more thoroughly.
Lynn Ray
