Hi we're doing a house but we have noticed where we have caulked in the bedrooms that are now finished that it was leaving dark lines where the he caulk is. We have had to use a stain block where the lines are and then cut in over it all again, only to find out we have to re paint the bedrooms again. I can get pictures if requested. But this shouldn't happen surely, we have caulked down side of a door casing and its going darker as it's dried (left it properly to dry and not painted over). Any help will be much appreciated as we're going round in circles.