posts_nav_link

I use the posts_nav_link like the Kubrick theme, standard layout.

But my problem is that in the loop, I use rewind_posts to go through it three times in all, and inside the loop, I limit it manually to 30 posts (3 columns, 10 posts per column max) and there is a variable to set it in the theme.

When I get to posts_nav_link() it won’t show anything; is this because I manually stop the loop at my limit, and not the blogs admin-defined limit?

Is there a way to set the loop again so that the remaining 31..x posts are “available” for posts_nav_link() to work?

Thanks