Theres a little bit of GCODE that Marty uses at the beginning of his prints to reset the print head, you can copy it from the test print on the SD card and put it in your cura settings like so.
I would also suggest lowering layer height to something like 0.1mm, it greatly increases detail. I also changed the shell thickness to 1.2 so that it is divisible by the nozzle size, to make the print more efficient.
I also think that Marty’s extruder heat (210ºC) is too low for the “test PLA” included, I have had much better success with 215ºC. For detailed prints (like 3DBenchy) I set the speed down to 30 mm/s
(Here are my basic settings, if you want to take a look)
Any of this could be wrong, if someone with more experience could correct me I would appreciate it