We have a rough hewn cedar ceiling cathedral ceiling. It had box built beams and we took them down after years. We white-washed the ceiling but everywhere the beams were, the white-wash was whiter and you can see a line where the beams sat next to the ceiling. The only way to save the wood look is to sand the entire ceiling, which will be a nightmare. Any other suggestions how to get a uniform look so that the areas where the beams were don't look different from the rest of the ceiling? To make matters worse, if we sand that area, then the boards are smooth and the rest of the ceiling rough. BIG PROBLEM...desperate for help