While I was cleaning up my slipper, I noticed that where the belt cover goes into the tunnel shape, the belt is actually laying right on top of that at the bottom. There's some marks of it rubbing there too. It seems to be very close or even touching all along the belt tunnel. It doesn't seem to cause trouble, but that is unneeded drag.. however, there's nothing I can do to raise the belt at the bottom, or is there?