68 rear leaf springs

I bought brand new rear leaf springs for my 68 fastback. I purchased them from NPD in Charlotte, NC. I picked them up with other items. Once I got them home, laid them down on the flow bowed up, I noticed that one of them was about a half-inch lower than the other one. I checked that both end were lined up and that the item numbers matched. Both were good. Will this cause a problem and should I return them for a matched set height wise?

Thanks
Dave