Chester,Dwight, Wes, and Ton A,
In all of my 36 Years in the machine shop environment I have never found any reason for witness marking except for disclosing the removal of a part. And if the parts are reassembled properly there should be no discernable misalignment, otherwise the head space will be changed from the original indicated by the "wit-mark".
IMO It just seems strange to me that a knowledgeable person would make a statement that misalignment was proper.
ViggoG
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