What cleaning technique do you guys use for cleaning off the release agent from a kit prior to priming or airbrushing? I thought I had cleaned mine well enough with warm water and a dash of washing up liquid in a bowl, giving a good agitation with a brush and then air drying. Then when I tried to apply the Tamiya Fine Primer it managed to separate on a few of the parts as though it was still dirty. Would it be an idea to clean with some meths on a clean cloth just prior to spraying to remove any last residue or could this damage the acrylic paint application? Any recommendations?? Thanks, Colin.