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					Originally Posted by SuperNovaSS  Jose,
 Did the tach always “zero”
 At 100-200 or was that after the adjustment. Moving the potentiometer shouldn’t affect the zero reading.
 
 I love the chrome line lock button. Fancy!
 
 Jason
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 To clarify the tach never did rest at zero. The adjustment did not alter the resting position but it did make a huge improvement in the overall accuracy of the tach. Here is a photo of the tach off/zero rpm.