During the 15, 30 & 45 second position the stop pin slips off the stopper plate. I've tried to clean it, oil it, follow the other movement parts affiliated with this issue but no solution. Sometimes it catches but mostly it does not. Would love to hear what you have to say. Thanks for your help.
Here's a video of the issue.
Here's a close-up video of the slipping stop pin.
Here's a video of the issue.


Here's a close-up video of the slipping stop pin.
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