your distances on you linkage assembly are wrong. if the pad is too tight its the two hex screws on the shiny brake calipers. those two plus the info in this vid should get you by
[ame="http://www.youtube.com/watch?v=x-kbmqWN9Uw"]RC Setup Guide; Brakes Vid 11 of 21 - YouTube[/ame]
You just simply adjust the pull on your linkage. Turn on all electronics without truck running apply brakes and watch which rod moves. Then adjust the slack to none or very little and retighten nut. Apply brakes again and make sure all is tight then fire it up and give em a try