We lived through that pain previously on the rest of our fleet. We mostly run 7545's and they had that issue you described. Though all of them still worked with the 139 port once we updated the firmware. What got us specifically was the pool files. The 7845/55 was set properly with 445. It wasn't until I looked inside a template file that I found the culprit ports set to 139 that caused the failure.
As for the employee, I don't recall his name. I was working with a guy named Andrew who was quite helpful and seemed knowledgable. Then we got the call from a different guy who contradicted literally everything and didn't seem to understand how template pools worked in relation to workflow scanning. After asking to escalate to someone more versed in this area that's where he started touting his experience which really didn't matter to me and seemed beside the point. You either understand what I'm talking about or you don't. Your years of service doesn't really matter to me.
Still, thank you for the reply. I'll consider posting here in the future to see if it expedites the process.