@archon Active 5 years, 9 months ago Activity Profile Forums Topics Started Replies Created Engagements Favorites Search for: Search Forum Replies Created Author Posts Alexander Simonov 29 October 2017 at 4:44 pm #344091 Check the other end of the screw, under your bench top, where it connects to the guide rods. Most probably it unfastened itself and is now moving freely on its own. Settings Author Posts