All done!
I don't know how this happened but the location of the center frame board was off by about an inch, thankfully due to my idiot-proof design it didn't really matter.
![](https://i.imgur.com/SjKawF0h.jpg)
Packout bases installed.
![](https://i.imgur.com/bJz8lKEh.jpg)
Roughly a million dollars and my first born child worth of packout boxes:
![](https://i.imgur.com/kPmyd9kh.jpg)
Proof is in the pudding - put my life on the line testing out my load calculations with the slide fully extended.
![](https://i.imgur.com/DHGzYu1h.jpg)
With nothing in the packouts, all my usual gear fits on the one slide. Most of the contents of those soft bags will go into the packout boxes.
![](https://i.imgur.com/zQjC6soh.jpg)
I'm pretty happy with how this turned out, there's a few additional improvements I have in mind but for the most part I just need to get my gear organized now. This vastly improves the usability of the bed with the topper installed.