On the knit ribs, do it as if you were doing st st and on the purl ribs do it as if you were doing rev st st. I'm not sure if it will be perfect, but that's how I'd try it.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
Hop aboard while we follow the cloud-covered van of knitting harmony, man!! Woooo!! --Hedgehog
IngridKH on Ravelry