It was sticking and not refilling correctly possibly due to some buildup. A bit of vinegar to clear out any buildup and a finger full of grease and it's bobbing like a dream.

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[–] 4 points 2 months ago (1 child)

Yesterday I used plumbers grease on the flap to stop a tiny annoying drain leak. Is that the right way to fix it? Don't know, don’t care, that toilet was cheap and its a POS. (I tried acid first, it didn't help, but it did get rid of all the rust marks!)

Yeah, solving problems with grease! fist bump

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