Oh gosh I do feel for you - small thing or not.
Have just had to make use of "Jack the Ripper" 3 times successively after putting the blocks of my sons quilt in the wrong place, wrong order and finally all in right but was 1& 1/2" out so huge ripple. Couldn't understand why until I suddenly discovered that I had inadvertently put on an extra sash. Dam! Oh well as you say, in the grand scheme of things it is "small stuff" :oops: