Http Pages Redirecting To Homepage (Https). Why?

Figure I should update this as I discovered it was not 404 pages but pages that are http when my site is full https. So any links within my site that are non-https are getting directed to my home page. Where do I need to look to fix this?

It looks correctly for me. For example

http://fastdecals.com/shop/boat-personal-watercraft-decals/

redirects to

https://fastdecals.com/shop/boat-personal-watercraft-decals/

I think maybe I fixed it by modifying my htaccess to set my preferred domain as https. Was driving me nuts as I had a BUNCH of links that pointed to http. I actually went through earlier today and modified them all of them within my "content" to be relative links using FoxReplace to speed things up. Thanks for looking.