I'm praying that Stumpy really is a good guy, that he does know his stuff, and that the loose air hose is the cause of all those problems! Will they pay for your gas to go back there, or is it ok for your local guy to do the repairs?
Whatever happens, it seems as if you will be reimbursed for whatever needs to be done-----as you said, WE SHALL SEE!
Good luck with whatever needs to happen! Keep us informed!