I had a couple of pieces that didn’t reach temperature in my last firing, so I decided to put them back in the kiln on the next firing – no additional glazes – just to see if they would finish firing.
One particular bowl looked awful!  The glaze had cracks, holes, and bare spots. I added no further glaze and then fired to Cone 10.
Here are the results!  Before and after!
Before!  Pretty grotesque!
MUCH Better!  Quite nice actually!

So, it was worth a second chance!