Makibox - the next steps

The default hotend of the Makibox is ...crappy.
The thermal barrier is not enough to print anything larger then a test-cube in ABS or PLA. Even with no retraction at all, the filament above the heater block expands and stalls even the strongest extruder after 30 inutes of printing. (Using the supplied Makible filament and higher temperature settings. With Makibox-supplied default settings it's much worse.)

I already have a stronger and spring-loaded extruder and a thinner bowden tube. They help but alone they don't solve the issue. They just postpone the failure.

I'm currently waiting for a modification from a forum user in the US that adds a cooling block to the existing hotend. The modiciation is as simple as screwing it on and mounting a fan.

In parallel I already have an E3D hotend version 5.
During Easterhegg I'll try to find someone to print me a mount (or another mount for LM4UU linear ball bearings) for that and follow the instruction of user my_makibox to install it.
If not, that mount looks simple enough that maybe I can CNC mill it out of a piece of wood.
(Having E3D print a mount for me was not avaliable when I ordered my hotend.)
Not that is does require a firmware update because it has a different thermistor.
my_makibox supplied a compiled firmware here .
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