When choosing the center cut option, there are plus and minus (-) numbers above and below "0". In which direction does it go? For example, 0.0125 and - 0.0125. Which one is before "0", or shy of center, and which one is passed center? Sorry, my math isn't the greatest!
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I believe negative means past center and positive is shy of center
Yes, to above. Do not forget side plate material in calculation.