The drivers are DM542A with a max peak of 4.2A. According to some papers I found online with 1,2,3 off= 4.2A. So I just switched to mach. Can still turn by hand. My enable is not wired at all (just like in the video I shared.) My PUL+(+5v) and DIR+(+5v) are wired to the +5 volt side of my terminal block(as in the video)