It’s hard to judge any airbrush by white. The pigment used tends to be larger than say a red, so it clogs more frequently.
If you have some primed models, after you’ve cleaned your brush use the paints you have rather than a primer. As someone else said, there’s an additive in the paint to make it a ‘primer’ and that has a tendency to stick tight to the insides of my brush.
I don’t know how tech savvy you are, but I’m assuming since your on lemmy it’s pretty good :)
The way we’ve solved this sort of problem in the office is by using the LLM’s JSON response, and a prompt that essentially keeps a set of JSON objects alongside the actual chat response.
In the DND example, this would be a set character sheets that get returned every response but only changed when the narrative changes them. More expensive, and needing a larger context window, but reasonably effective.