Hi I have had two 1500s, a 19 and a 20 and they both leak dust around the back doors very bad. On the Ram website it mentions a new filtration system and less dust. I am curious if this actually took care of the problem for gravel roads for any of you who have a 22 and frequently travel gravel. I really don't want to switch to another brand again but I can't have anything in the backseat without being caked in dust. Thanks in advance.