Now, this works fine if I use Prusa Slicer, which has built in "Single e xtruder multi-material" as an option, but cura, expects there to be four extruders, ...Is there a plugin for Tool change, single extruder multicolor for Cura? as since Cura 'thinks' it has multiple extruders, Klipper expects more then one, and errors out.
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Here is a simple example: