First-sidebar, main-navigation subtheming

Hello, I'm currently working on a Platon subtheme, and I've hit a problem building a new sidebar menu layout Assuming I'm just creating a super simple 1 column layout: .item.item2.. , I've gone about creating the menu in the following way. 1.) Copy below templates to custom subtheme: platon--site-content--first-sidebar.tpl.php platon--main-navigation--row.tpl.php platon--main-navigation-item.tpl.php 2.) Editing each file as required, leave the PHP as is, replace the markup with my own Problem: Inside the row.tpl, the code only instructs to print the $items, however in actuality it prints 2 items, closes the row, then iterates. I'm struggling to see where this behaviour is controlled, as if it's not controlled in the template, and there's no view/setting....where is it coming from? I'm looking for a single column menu, but something is forcing the menu to build in multiple rows with 2 child items each. I can workaround this, but I'd rather understand exactly what's causing the behaviour. I can't find any reference in the code that would cause 2 items per row, so I'm hoping you could shed some light on where this is controlled, or if I'm going about this in the wrong way? Thanks allot,