Lots of owners here will always recommend getting documentation of asked for work, work that was done, items found during inspections and why a part or system is bad. My questions are an example of the details I would want from any tech that I pay good money for working/inspecting my rig. I am not a fan of guessing at things and do understand why a qualified tech would want diagnostic time paid for. Those tools have to be paid for somehow. Good luck and please post here or in a different thread you start, about future findings.