I agree. My blocks always come out 1/4 inch to small even when I measure each section and size them perfectly. It is just me.
It dosnt matter if they dont come out the right size as long as all your blocks turn out the same and adjust your sashing.
The only time it is a problem is when I share blocks with by group for a particular size block. Then I have to make sure I have a scant 1/4 inch by adjusting the needle.