In all code examples I found setpower equivalent is used(in lejos segway.java and hitec nxc example, and labview ev3 program) I dont know why.
In lejos source code i found that power param for setpower is byte(in java is signed type) I changed this in monobrickfirmware to sbyte, now i dont need to change polarization(Reverse attr).
Now I’m analyzing lejos source code to find differences. And I think they are using some filters for gyro.
Maybe this is a problem.