I'm working on a Konrad Mauch standard with a miniature movement. It initially stopped several times while lifting the minute hand, usually around 10 to the hour. While turning the minute hand by hand, it turns easily with light tension from 12 to 6, then has quite a bit more tension from 6 to 12. I thought it might have a bent minute arbor, and was going to check that once it stopped again. Wouldn’t you know it, it’s now been running for 3 days. While I am waiting for it to stall, I thought I would ask if there might be another reason why there is different tension when manually turning the minute hand.