Hi Carrie, I don't know that I can offer any good advice beyond practice, practice, practice. I'm a novice knitter and when I learned continental the purl stitch gave me fits. I just kept at it until I finally found a comfortable way to keep my tension as even as I could. Perhaps if you're not able to tighten your gauge up enough purling you could loosen the tension a touch with your knit stitches? I have read that many knitters purl a bit more loosely than they knit, regardless of their knitting method. Hopefully the experienced knitters here can offer you more sound advice.
