How did you determine when to make a machine adjustment $($re$-$center the

process mean$)$ or make a labor substitution $($re$-$center the process standard

deviation$)$ or change both?

$$ Were you more reactive or proactive? Did this change as you did more runs?

$$ In general, what are the implications of making the process adjustments too

frequently?

$$ What are your take$-$aways from Challenge