My sister came to visit me over the weekend and complained of the same problem. The repairman was at her house for an unrelated problem with the dryer and she asked him and said there wasn't anything they can do.
Maybe that's why the inside of a dryer used to be dark, I remember my mom's was like gray or something.
I think its ironic that I've heard about this problem twice within three days and had never heard it before.
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