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Saturday 3 February 2018 at 22:55
Quoted from wizard_mode:With the correct blue spring you can still get all the way to the top past the top hole. But, the ball merely taps the top of the ramp instead of ramming it like a battering ram blasting the plastic to bits!
I concur, blue spring is the way to go.
Source: http://pinside.com/pinball/forum/topic/pinbot-fans-and-owners-club/page/43#post-4211037