The "fudge factor" -
How much "offness" in a block or matching seams can you tolerate - and are willing to try to work in?
My tolerance level is actually quite low - but I was joining some blocks I had made years ago and I have a join that is almost 3/16" off - the rest of the joins in those strips are "good enough" - and after three tries, I have decided to live with the puckers and "get on with it"!
The part that is most aggravating to me, though, is - I have not yet figured out "why" it is off that much.
The seam allowances seem to be the same, the cutting was accurate (when I measure the pieces, they seemed consistent with the other pieces). Not going to lay awake any more and fret about it.
Are you super-persnickety ? Or can you tolerate a certain amount of "it will have to do" because it is not getting any better?