1. Question. I have been running 2 Nema 23 Stepper motors side by side in sync. They have been turning at the same speed. Also in Mac 3 they are all set up with the same settings for steps / speed and tourque under motor tuning. One motor sounds a bit different than the other one. The motor controllers have also been set the same. Pulse Rev Dip switches is 400. Is t his normal? Video of the difference in motor sound. 2. Question What does Pulse / Rev Dip switch table have to do with setting up motors? Micro Step Revolution? Is this the same thing your doing in Mac 3 under Motor Tuning under steps setting?