I have installed a new step2linear board on my cnc milling machine . i used the old settings (y-axis) from viper-tune to tune the new board, but now the y-axis moves only in one direction , if i tried to move the other way the computer told me that SOFT LIMIT HAS HAPPENED (if i try to return the Y-axis to point of reference the coordonates on the display change but the machine doesnt move). HELP ! . PS: I am a begginer in the machining wolrd so please have a little patience .