Vallejo Black Airbrush Primer. I thinned it by eye 2:1 primer to thinner.
I had no idea about this issue with primers though, so thanks!
The main clogging issue was scale 75 white which seems to have gotten a bit grainy.
I was also told about dry tip which might be it. I'll know more later when it's had some time in the soak
Yeah i only used the primer for priming :)
Didn't know that about white either though thank you