It's a whole range of issues from operators not following process, poor paint finish poor packaging ,not gagging out inspection i.e leak test then product fails leak test at customers,operators not understanding key characters. I think some of it is poor converting customers requirements from upstairs team to give the guys on shop floor easier to work with information .Would an Fmea not help capture some of these.I don't have experience with make to print .To be fair,some of the tolerances they ask for are machine tols, yet we are fabricators but that's not the only issue