Don't you just hate it when this happens.
View attachment 1336491
Working on a Seiko 6138A chronograph movement. I finally got the yoke spring into the correct position and went to fasten the setting lever spring screws when this one gave way without any force being applied at all
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Luckily I was able to back out the screw with a needle and get a replacement from my stash of Seiko parts, so all is good and it's ready to put the balance in for a run before I lubricate the pallet jewels.
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