Cura 4.1 for Robo R2

I loaded Cura 4.1. It screwed up my Cura 2.5 causing 2.5 to push globs of plastic onto the bed. Cura 4.1 will not allow adjusting the flow rate so I am unable to get any good prints. What is the latest version of Cura that someone has successfully used?

 

To get the printer working again I had to got to System->Restart. Once restarted the over extrusion stopped. You were right on with setting the extruder to 1.75 in Cura 4.1, I feel kinda stupid not thinking of it. I have made the system dual z stepper and the Arduino takes just a little more time in computation and I doubled the reset times to stop random stopping (resets) of the print. You can copy the .json file right out of Cura for Robo 2.5 into Cura 4.1 and it is recognized. After reading the .json file I realized it was not worth it. Thanks for the help.