Sorry for the late reply.
To answer some questions:
Yes I had to cut down the cart slot to fit everything inside. I did it with a dremel and then sanded off any of the loose bits.
I used bolts and spacers to mount the pi and control block.
The blue indicator light was one I had lying around from some guitar pedal mods I have done in the past. I measured the diameter of the light with calipers and then used that measurement to select a drill bit to mount it. It's actually tight enough to be a friction fit. I did not glue the blue LED in place. The light is connected to the LED pins on the control block. The red OEM light could be used instead but I decided I liked this look better. Beside the red LED comes on when the full boot happens.
The cart slot cover is glued shut with gorilla glue. I used hot glue to secure it while the gorilla glue cured.
I did the same for the eject button. I cut off something like 60% of the eject button and gorilla glued it in place again using hot glue to secure it while it cured.
I considered making the reset switch work, however I opted not to due to space and wiring so again that's held in place with hot glue.
In order to mount the HDMI and barrel jack I had to dremel some of the back of the port plate off. So I did that with a cutting wheel then sanded it flat. The multi out has an uneven back to it (my guess is support) and that had to be removed. I also had to drill out the hole for the barrel jack as it was bigger than the default hole in the case. Once that was done though there was no good way to secure the back panel to the case so I at first tried gorilla glue, however there was not enough surface to hold it hence the globs of hot glue you see in the picture I posted. It seems really solid now.
Sort of wish I had done a better job documenting how I did this.
