How does severity impact production? Money, time, or both? I assume both, but how much? There is a balance to be struck between the higher cost of inspecting/rework at the end vs.the cost of intermediate inspecting/rework not impacting throughput of the line. Any hints, Cliff?
Sorry for the delay in replying. Basically severity is a measure of how long it takes to fix that problem at the rework slot. The severity of each problem is a small random number, and every time a car with a defect goes through a slot, the severity increases. Thats because the defect gets more and more hidden behind new panels, equipment and features. Thus the optimum time to fix a defect is right after its caused 
The only financial penalty is the time taken at the rework slot. The severity of a defect does not affect customer satisfaction, just the number of defects.
My next experiment is to push crap out the door and see if it can be overcome by excessive marketing. I call it, The Microsoft Maneuver.
Or peugeot…in my experience
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