I'm having the worst time painting my kitchen. The cupboard doors are painted and need a new coat. I've sanded all the cupboard doors (not to bare wood but to smooth and scuff the surface) I've primed with Kilz and I've tried Olympic paint (semi-gloss) and when I went to wipe some dust off to put on another coat, the paint came off with the wet rag. The crazy thing is, the Kilz seems to be coming off with the top coat, all with water and a rag! I just can't seem to get the paint to stay on the surface. What should I do?