Like massman said, you can possibly twist to make even.
As far as how it sits now, 1/4" difference will probably make nearly 1/2" brace height difference. The longer one will make the arrows preform stiffer, and your sight markings won't be on for sure.
One problem I've noticed on overly twisted strings is that they act like a spring. Too many twists, and the arrow preformance goes the other way.