I assume you mean 0.2 layer height not line width.
Extrusion flow can be adjusted in the CURA slicer. I don't think the Capricorn bowden tube will make much difference to extruder vol. Extruder vol varies in part with the molten filaments viscosity which in turn depends on hot end temperature so you could try varying that up and down in 5c to look for improvement. Stringing is also dependent on nozzle temperature.

All these features ( bed adhesion, material flow stringing) vary greatly between brands even with the same basic material !