Also I am using NEMA 23 size motor running newest version of gbrl. I am using 24 volt supply and 2.7 amp per phase, 2 volts.. I have a larger bed so it moves slow, I am not missing steps, but seem to move slower than the NEMA 17 Shapeoko I have viewed on YouTube.. I have played with the parameters do I need to shut down and re apply power or do all parameters take affect immediately?