Garry'sMod Backgrounds to big?!

For some reason no matter what I do my backgrounds a larger than normal any solutions?:P.s:Here are some pics of my problem: (press next above the picture to see the next) plus none of these edges were cut off these are what i see when I open up gmod AND MY RESOLUTIONS ARE 1366x768 and my Aspect ratio is 16:9

I can verify. I got the same problem with the same resolution and aspect ratio

Is it only for that resolution/aspect ratio?

It seems like its at least better or as it should be when i lowered my resultion