It is hard to find a plaid or stripe absolutely straight. I bought medallion fabaric and spent $$$ on all the fabric needed for a pattern. The medallion squares were not straight. I purchased an 11 1/2" square ruler just to make perfect cuts and they are still off. I knew if I bought more fabric I would still have the same problem. I just went ahead with the quilt top and overall am pleased with the results. If you can get a refund or exchange go for it. If not I would go ahead with the ideas posted. Good Luck to you!