Discovered a noxious odor last night coming from our dryer. Husband has gotten the front panel off and vaccuumed everything we can see. Also removed the lint filter cover and cleaned that out. Nothing's in the vanes... Any ideas? The back panel seems to be spot-welded on (or at least painted on), as it won't come loose after removing all the screws. We're showing our house this afternoon! Wouldn't you know it!?