I have just had 6 knotty pine internal doors hung. I noticed on the packaging that the joiners threw away that the doors should be primed before hanging and that they shouldn't be hung in a newly plastered house. I had the flat skimmed last week and the doors wewn't primed by the joiners before they went up. Should this be a problem? (the plaster has dried now I would say, there is heating in some rooms but I removed most of the radiators prior to plastering)