There may be a way to salvage what you have, think about working outward from the center of the blocks and find the one with the SMALLEST dimensions once you would recenter it, then cutting from the center out make all the blocks the same size, the quilt will either be smaller and you can enlarge borders, or you can picture frame each block by an added amount to make the quilts the size it would have been. A tip for the future, always work from the center out when measuring to square up a block by that I mean if You take 1/4 off one side then you should take and equal amount from the other side. Dritz sells a blue ruler with little 1/8 inch squares printed on it with a zero in the center to use for marking before cutting. I dont use it to cut as it is thin and Iam afraid to cut my hand, so I am very good friends with the disappearing ink pen.
Pat in So Fla.