Printing tiny lettering on polyprinter?

Want to 3D print on polyprinter but having trouble. Need super precision and it’s very small. Does anyone have advice on printing tiny lettering? These letters only have a line height of 3mm. They are not coming out right. Its a cover for an old typewriter strike head. Do I just crank up the precision meter? Do I do anythjng else? What about the extrusion diameter, etc.
gift.zip (5.0 KB)