I'm a bit stumped by my new Culln model; I followed exactly the same process I normally use to clean FW resin(almost-hot water with a 5:1 mix of dish soap and surface cleaner, plus a toothbrush scrub), but where before it's resulted in the model losing the shiny appearance that indicates excess mould release, this time it didn't. I've scrubbed it three time now, and it's still just as shiny as when I took it out the blister. At the same time, it doesn't feel oily.

Is there any way to tell definitively when you've properly cleaned it?