95% of all my builds are resin kits, studio scale Star Wars kits actually. and on them i only use Plastikote rattle can primer. its sandable if you need to and it works great w acrylics afterwards. Skip ahead to the end. i finish it ONLY with Testors Dullcote in a bottle mixed 50/50 with a laquer thinner through an airbrush. it is the ONLY clear that comes out super matte. Acrylic matte coats of all kind leave a slight satin sheen to them. BLAH to that!!!