Can’t move primary calibration screw on Baratza Vario? by James DiStefano | Sep 17, 2015 | SEO News | 0 comments Can't move primary calibration screw on Baratza Vario? Hi all, Long time lurker. I just acquired a Baratza Vario and the grind is very, very, very fine so I thought I would re-calibrate it using the primary calibration screw. more info… Submit a Comment Cancel replyYou must be logged in to post a comment.