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Sunday 8 April 2018 at 02:37
Quoted from TimeBandit:Why don’t you just go and do the ball drop test under the aprons of all your machines?
Why bother? The testing bears out what I can already see on Sterns on the route.
Source: http://pinside.com/pinball/forum/topic/steve-ritchie-discusses-pinball-playfield-dimpling/page/2#post-4326660