Hi Guys: I just got my Arduino all set up and running, everything seems to work well with GRBL. I have an arduino with a screw terminal shield, and several SainSmart single axis stepper driver boards. The issue is I am not sure what to use for settings on the driver boards. They have a set of switches for coil current setting, which is straightforward. They also have switches for microstep selection, which is also straightforward. The ones I have some difficulty with are the switches labelled Torque and Decay Mode. Not sure what these do. Doesn't seem to make much difference what I set them to, except for motor noise when stopped. The datasheet for these controllers is in Chinglish, so it's impossible to decipher. Anyone have some insight? Oh, and also the motor seems to work well when running at full speed, but seems to have some missing pulses or something on accel and decel. You can hear the thing hiccuping as it accelerates to full speed and decelerates from full speed. I don't have the actual Nema 23 motors I am going to use yet, I only have a small but powerful Nema 17 motor for test purposes. Any ideas? Thanks.