Egad! No wonder the paint doesn't stick to the board of the MDF - the previous owner or whoever owned the CAB, didn't use 'raw' MDF board, but what appears to be some sort of finish like melamine.
Anyone have any suggestions here on what to do. Do I strip away all the paint that's not sticking and then sand the MDF, or would I be okay just applying primer and hoping it'll stick to the finish.
Grrr....