The interior doors I recently purchased are primed white but the jambs are not primed. I bought a can of zinsser prime coat 2 (latex) and started priming but it was still showing the wood after one coat. At this rate I'd have to put 2 coats or more to get it solid white. I'm pretty sure I stirred it enough so either I got a bad can or this is not good paint. Not sure if it matters but I was using foam brushes since I've had bad experiences with dropping bristles before. To make matters worse it raised the grain so now I need to sand. I'd appreciate it if anyone can recommend a good paint to complete this job: latex or oil. I'm looking for the best paint that will do the job in one coat and result in a nice finish. A paint that can be sanded is preferred in case of drips/touch up needed.