Sorry for the late reply, I just noticed this post. I've done a couple of things that have drastically reduced the amount of dust in the bed. First is the tailgate seal. I applied it to my tailgate since it wouldn't stick as well to the factory bedliner in the bed. I also covered the holes under the bed rails using pieces from a car wash sponge from walmart. I simply cut pieces that were a bit bigger than the holes and stuffed them in there.jbumx2, I have same SV 4X4 CC with cap as you. been trying to keep dust out of box when driving off road. so far have failed. have you noticed the same ? nice pics.