Boris_

I have build the DIY Ultimaker 2 Extended + with the dual extruder option from Creatick but I still don't have the second nozzle working, It does strange things, the offset of the two heads can't be adjusted on the display, no option in the menu but there are two heads in the menu for the other things. Does anyone have experience with this?

You have got a potentiometer called R3 on your picture.