I've got a problem everytime i paint an interior plastic parts it always bubles up. so this time i tried sanding and buying good plastic paint to do my dash and stuff. What do you know it still bubbled up I washed it dried it sanded it and use very thin coats of paint still bubbled up like there was to much gunk still coated on need help because my dash looks like shit! also has anyone used that vinyl spray for there dash if so pics or insight would help!