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We had been written up for NC during the last 3rd party audit because the MSA I did for our inspection machine was not done in the way MSA book did. Is it a mandatory to check 50 pieces of samples to get the analysis? My machine has 4 - 6 pins each holding the parts during inspection, and if I must do 50 pieces of samples on each pin, it'd be 200 - 300 times of manual loading and unloading of the parts, times the numbers of characteristics checked (he insisted it had to be done per characteristics), so technically I must do this at least between 800 - 1200 times, which is cumbersome and not very realistic. If I did it with 20 pieces of samples, would it be invalid because it is not the way it's done per MSA book? I've been thinking about this over and over for weeks and I still can't figure out what is the best way to do this. Any recommendations is appreciated.