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Friday 19 January 2018 at 13:10
Thank you @cadillacmusic
Now that you mention it, the center shaft (threaded shaft) has seemed a little unstable to me in the past, but I’m a rookie so unsure of what’s normal. The bug will move in Switch Test mode, so I’ll be testing/checking that shaft out tonight after work.
Source: http://pinside.com/pinball/forum/topic/operator-alert-how-to-diagnose#post-4184002