We had some book shelves that were painted with semi-gloss about 8 years ago. We repainted them with semi-gloss without scuffing in between. After 48 hours they are still tacky to touch. My DH says it is because we are having high humidity right now (raining) and that it will just take longer to cure? Is this true and if not how do I save this paint job? Its a LOT of book shelves! Ugh.