Shopify Theme Edit

I need someone to edit a few things on my current shopify theme. I need 1 for the theme to show the "full" image on the thumbnails of the products for ALL browsers. I had another user TRY and fix this but it only works for Safari. Windows & Firefox browser still crop the image thumbnails and don't show the FULL image thumbnail. Lastly, I need on each product page list for the "sort by" and the page navigation (forward next 1,2,3,4,5) etc is also shows at the bottom of the page. Right now it is just shown at the top and the user must navigate back to the top to go to the next page. That is it. Simple as that.