Don't give up. It just tests our resourcefulness when we run into these problems. You can always put the 1 1/4" strips away for another project and carry on with some more fabrics.... Pieced strips can be cut into wonderful patterns to sew, (tube quilts, nine patches, Irish Chains, Warm Wishes, etc.) so you may end up with two completely different quilts from your "mistake". Buck up and forge on!!