loose purl stitches

[cawhouston]

As noted in many posts purl stitches may be looser than knit stitches. I knit continental and have looked at many youtube videos to see if my technique is in error. I also have tried wooden needles, knitting only from the tips, different needle angles, relaxation to keep a uniform tension, all to no avail.

Anything else I can try? Or is it just practice, practice, practice?