Everyone's last stitch is loose to some degree. The stitch is only anchored on one side. The way to compensate for that is to either pull the first couple of stitches tight on the next row, or to slip the first stitch of each row without knitting 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