Has anyone ever run into a shop that said the 7 bolt has structural issues that would cause them to advise against building one up? I got one shop saying "The cranks have some hardness issues due to their nitrating process" and "Beyond the hardening issues 7 bolt rod journals are not as thick as 6bolt and allow less surface area on the rod bearings and are more prone to issues"

so they do not offer a warranty on any 7 bolts they do build up if customer wants to go ahead...