You need to increase 35 stitches to get to 250. They want you to spread them out evenly--not just increase at each end. It would probably work if you increase about every 7 stitches. It doesn't have to be absolutely, perfectly, even--just close enough is close enough.
"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