Infinite scroll is loading the same posts

I am currently using Grid Theme Responsive for my website/blog/portfolio. I haven’t had much trouble editing and creating php so that I could create new pages to suit my needs (creating a Home Page for example). Unfortunately, it seems no matter what I do, I can’t find where in my php I should change the values for my Infinite Scroll.

Right now, it is currently set to:

$args = array(
                 'category_name' => 'all',
                 'post_type' => 'post',
                 'posts_per_page' => 8,
//                 'cat' => '-' . $category_ID,
                 'paged' => ( get_query_var('paged') ? get_query_var('paged') : 1)
                 );

I’ve changed it 8 to 100 and it works–all of my posts will show, but I don’t WANT them to show at the same time. I’ve also tried changing the value in Settings>Reading. I’ve tried making my posts “sticky” and without. Nothing seems to work.

Please view my website here at http://owlsonfoot.com