Lesson learned: do not cut fabric late at night. In the morning the pieces will not be the right size!
I was cutting out pieces for a simple quilt I am making for my cousin's baby. (I think it is for him, anyway. Sometimes the planed receiver changes several times when I am making something.) When I came back to the project the next day, I discovered the strips of brown corduroy I cut for a border were too short- by up to 10"! Luckily it was a simple fix. Cut the center fabric down an inch, add squares of fabric at the corners. Looks like I meant to do that!
Now, does the no late night rule apply to batting? And I have a feeling I am not doing this part in the "right" way. I'll let you know how it goes.