You have run a capacity resource profile on your shop. Products have been routed sequentially through resources A, B, C, and D. The capacity resource profile tells you that resource A is scheduled at 95% of capacity, resource B at 80% of capacity, resource C at 130% of capacity, and resource D at 100% of capacity. Assuming that the data we used to calculate the capacity resource profile was accurate, how would you employ the “drum, buffer rope” thinking?