Hybrid corexy(markforged) issue

I have 3D printer with markforged(Hybrid corexy) kinematics, according to image. The extruder moves normally along X axis. If printer moves Y axis, the gauntry moves normally, but the extruder moves along Y and X axis simultaneously. If i reverse X stepper, the extruder moves normally along Y axis, but in the opposite way only along X axis(reversing Y stepper gives similar result).

How can i reverse X axis? Do i need to rotate the gauntry?