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Discussion Starter #1 (Edited)
Been watching a lot of Spencer Klein videos about mainspring arbor holes being ovalized from wear. Then I look at a pic of my movement and see what looks like a black crack right by the screw.... am I crazy, could it’s be worn so badly that it has cracked the plate?
Tell me I am old fool. Lol
 

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Been watching a lot of Spencer Klein videos about mainspring arbor holes being ovalized from wear. Then I look at a pic of my movement and see what looks like a black crack right by the screw.... am I crazy, could it’s be worn so badly that it has cracked the plate?
Tell me I am old fool. Lol
That bridge with the crack has nothing to do with holding the mainspring in place, it houses the auto winding mechanism. You have to remove that bridge and then the large ratchet wheel to see the bridge that holds the MS barrel.
 
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