What condition is your vacuum head in? The reason I ask is that earlier this year, I was having the same kind of problem. When I inspected the bottom of my vac head, I discovered that the many of the bristles were missing which allowed the vac head to get too close to the liner. Bought a new one and the problem was solved. That may not be what is happening in your situation, but just tossing it out there as a possibility.
Bookmarks