When I work out my back I feel like my biceps get worked out more than any thing. I really don't feel it in my back at all.

I have been doing seated cable rows, dumbell rows, lat pull downs ect...

You may say my form is not correct and it may not be however I looked at some video on another web site and I am doing it as they say and show.

Any advice on the subject? I know that the biceps are getting used and I will feel it some but I guess I am asking why don't I feel it in my back more than I am feeling it? I know this is not easy to answer since you can't watch me. Do any of you feel the same?