I have the same brake dragging problem. Just started last week, other wise brakes work fine. I saw "mrfixit" reply to replace the brake springs with stronger ones. Where to get those? Also where is a good place online to get other parts for it. C25C ?
I tried other suggestion to losen the brake bleeder, no fluid came out. So I would also agree with that post the it should be mechanical within the brake wheel area.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.