My only suggestion is to keep the needles as close as possible when switching. When I'm ribbing, I find that I tend to put my yarn over or back before I even slip my stitch off the needle. It probably started as a time-saving thing, I didn't start to do this consciously, but it makes it so the yarn is right there and the needles stay very close--no stretching. Worth a try!
"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