When I do intarsia and am starting the first stitch, I knit the stitch with the new color, but then I make sure that I bring the yarn that I just stopped using over on top of the strand of the new color on the back of the work--just lay it over the new color strand, so that it will be in position to be twisted on the next row.
"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