Cheers mates!!
Im working on a Lemania 3000 – Hand wound, small seconds. Had to change the balance spring. Beacuse it got so badley tangled when I was cleaning it in isopropanol due to some stickye issues. Think I have sorted that out, but after putting all parts togheter. It runs very slow like - 967 sec/d. When im looking at the stud that holds the spring (see photo), I think that this is not tight enough, and that cause not managing regulating the watch, Am I right? How tight should it be? How to tighten it?