I managed to get the printer up and running with the single extruder. But getting the cable through the splitter is rather hard cause the cable needs to enter the splitter at specific curve to be able to come out of the other end. While printing with both extruders this causes an issue because the second extruder won't be able to wiggle the second filament through the splitter. Anyone got any suggestions how this can be solved ? I have been taking it apart multiple time and I'm not sure what's setup incorrectly.