Background images appearing too magnified

No, the background image is here: https://www.mungretgates.com/wp-content/uploads/2012/10/227-95.jpg You can see it in the stylesheet source. The image on the page you referenced is this one: https://www.mungretgates.com/wp-content/uploads/2012/10/227-93-1024×1024.jpg

Also, if you are tiling it, why are you loading 1000px + images? You could chop that image into probably less than 200x200px, tile it, and have the same effect.