I found this bit (post #974) referring to trimming the finished unit rather than each component.
Originally Posted by
Sandra-P
I have five units done! This is going to take a bit of time. Thank you to the person who said that they don't trim until they are sewn together as a unit as that is what I am doing now and it is working better. That said, mine are not perfect, I gave myself permission to be off a smidge. It is ok, I want to be finished, not perfect.