I am a newbie to building CNC machines. I decided to make a Workbee 1010 with the Blackbox controller. Order the Blackbox about a week ago. The build of the Blackbox seemed straight forward. A few nights ago, I started to test out the motors on the Y-axis. The Y-axis and the Y-2 are moving in different directions from time to time. I have double-checked the wiring. I used a multimeter to check for continuity, etc. Also, I checked all of the joints. The motors are from Openbuilds Nema 23 high torque. I just received the black box a week ago. I received the motors this week. Has anyone on the forum had these same issues? Is it possible I have a defective Blackbox? Any help would be much appreciated.