I've -- once again -- redesigned the hotend holder.

As you can see, the HolderTop plate has been split in two and the HolderBottom plate now allows the wires to go straight up. Unlike the first hotend holder design for Coaxial8or R0, the wires can easily exit the holder by removing the HolderFrontBack plate.

This design is closer to my vague, initial idea of what the holder would be like when I had the decision to change the Coaxial8or input arrangement, just that I thought that the two plates that hold the couplers would be directly connected to a "HolderTopConnector" plate instead of this arrangement. 

You may also notice the chamfers, and that's because I found a squashed thermistor wire when I went in to inspect for damage before embarking on more acceleration / linear advance / junction deviation tests.

I also encountered more leaks: