Thinned Vallejo semi gloss coat to the ratio of 15x ipa + 5x dist. water + 10x varnish, shot at 15~20psi and it spat! White speckles are not dust or anything, i suppose they are bits of varnish drying midair before reaching the surface and leaving those frosty little spots. While the finish of the semi gloss coat is very satisfactory, there’s nothing i could do about the spattering so i’ll be moving on with installing all the fragile extremities and finally fixing the canopy before calling her done.