A post by another user prompted me to ask this.
A song I was working sounded fine and had good solid levels but in two or three places hit the red on Master for a brief instant. I heard nothing amiss but it worried me to see red on Master, so I basically went by to scratch and remixed it, with a result of a lower level mix. (And it sounds lower level that its companions on the album.)
Should I have just let it go? Or is it always bad to see a little red square, not matter how briefly?