Hi All, I posted a while ago a walk through of the Baumgartner BFG 866 and wanted to add to it, especially as there is little out there to explain how to oil the cap jewels of a non shock proof watch.   This is the balance cock of the BFG 866 and as you can see it has a cap jewel held in place with two screws, screwed from underneath. Some pull the hairspring out of the way to oil through the oil sink, but I find it safer to remove the hairspring, but also it is good pra