Hey there 
i try to adjust the retract settings in cura, but for some reasons its not working…
Sounds funny but im not able to reproduce a RetractTower with stringing, even if i set the Retraction Distance to 0.1mm…
The settings of cura are not accepted by the printer.
Ive read a something about “firmware retraction” but i have not found how to turn it off - if it has to do with that.
Many thanks!
Printer: F250
Filament: Snapmaker PLA
Best Max