Are you sure that you're supposed to join at this point? Very often, patterns have you work back and forth on the circular needles, either because you'll have too many stitches to fit on straights, or you will eventually be able to fit them around the full length of the needes to start working in the round at that point.
"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