I have a Mori NL2500. I want to turn between centers with a live center but I cant lock my sub spindle seperate
from my main spindle. If I use M68/M69, both spindles lock/unlock. The same with M268/M269. How can I hold my
live center in the sub spindle without sub spindle turning. I am currently using a dead center with my spindles
in sinc but I am having run-out troubles with the dead center. Surely there is some way to apply the sub spindle
brake without also applying the main spindle brake. Thanks.