We've got a Hoover Dimension Supreme (model U5227-930) that's making a
loud, high-pitched squealing noise. The odd thing is that it only
makes the handle is at an angle to the body, and I think also only
when it's actually over carpet (not when going over wood floor). The
fact that it only squeals when the handle is at an angle leads me to
believe that perhaps something inside is pressing against the belt
perhaps. I've checked the wheels and clearning rotor from the
outside, which all seem fine. Any idea if this can be self-repaired?