if they knew how I might get ahold of a regional BMW tech
I think there’s a slight misunderstanding here.
Each Motorrad dealer is assigned a territorial Technical Representative. Their role is to liaise between the dealer's technicians and both the country's technical team (in your case BMW NA) and BMW AG's technical team in Germany. They are the conduit for providing the expertise for a dealer to fix a problem that they otherwise couldn’t, by calling on importer level or factory level technical knowledge.
So it follows that you don’t get to deal with the Tech Rep directly, rather your dealer has to raise a Technical Case with BMW and get their
Tech Rep involved in providing a resolution.