I don't think any of us mentioned that he would need to undo that one as well. Oops Sorry. Its on the exhaust side on the actual drum undo that, it makes getting the axle in the correct alignment easier. Move the torque arm off and out of the way. Just make sure once you have adjust everything that you reconnect that, if you don't your rear brake will not function. once the torque arm is loose the rear drum will just swivel freely that is perfectly normal. When you go to reconnect the torque arm just swivel the drum till it lines up with the torque arm and put the nut back on and tighten it back up. I really wish there was one of us closer to you to show you how to do this. Its a fairly easy thing to do once you know how.