I'm finally working on getting the bed done on my truck('53 3600)and ran into a problem. I bought replacement bed aprons about a year ago and went to put the brackets on today and they don't seem to be right. I threw out the originals two years ago because they were shot(i know rookie mistake). Here are a couple pictures of my problem.

http://i55.tinypic.com/16jf04h.jpg
http://i55.tinypic.com/2wewfo1.jpg

Any thought? I searched and bed aprons don't seem to be mentioned often.