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Monday 25 December 2017 at 21:04
Quoted from Coyote:I happen to have a much better copy of the schematics, if needed. They've been submitted to IPDB, but they haven't been posted yet.
Yeah, the current copy of the schematic on IPDB is definitely an eye strainer...
Source: http://pinside.com/pinball/forum/topic/big-ben-1975-problem#post-4142230