I recommend .2mm layers with 15% infill WITH SUPPORTS but no raft. You can use a raft if you like but a healthy spray of Aquanet Unscented Super Hold allows me to print this part with supports without the use of a raft.
I hate rafts and supports but supports are a necessary evil with this print because if I made the filament tube guide a solid block, it would collide with the X-axis rod.
Be sure to remove the supports under/inside the filament tube guide, under the clamps and in the wiring gap.
(Assuming you have already removed the left fan, left heat sink and left stepper)
Remove the stock head and snip the right filament,remove the right filament tube guide (and any spacers you may have inserted).
Clamp this print around the fan.
Feed the filament and filament tube guide into the filament tube holder on top and zip tie your wires.