As you can see in the images, the two runners on the left side of the image are the ones I put in last night. Somehow I was able to get the runners flush with the pocket with not too much effort.
That third runner is the one I just put on 15 minutes ago. It took about four hours of messing with it, and I finally had to just redrill the hole and set it about a half inch back from the front of the pocket.
When I tried to put it up against the pocket, the sides are just too wide to allow it to sit far down enough in the pocket to get the nut through. Like I said, I hammered it, I pressed down as hard as I could, and it wouldn’t sit.
If it’s not an issue for it to be off set like that, I might just put the rest on kind of crooked. I’ve literally been messing with this thing for like days now.