Building a custom Template file for Marketpress

So I am using Marketpress for a site and I would like to create a couple template files to have a little more control and add a sidebar to only the product pages. I have created a mp-product.php and a mp-productlist.php with no success in doing what I want it to do. I want to have all the data from marketpress default (ie. price, description, featured image, cart, and etc.). Once I put the mp-product.php live, marketpress no longer defaults to all the data just the data specified in the template. So I would like to know where to find the code that contains (price, description, and etc.) and still use the same style from the css included in marketpress