I've got a ACE CENTER MB 46-VAE, trying to change to the lowest gear possible cause I'm doing some 5/8-11 blind hole taping and the load meter goes through the roof and the spindle stalls out. I've tried switching from M42 to M40, M41, and get the same results. I noticed that when I put the gear change on the same line as the speed and M3, the spindle doesn't even turn on, so I put it above that. Am I missing something. Is it a parameter setting or the placement of the M40 or M41?