but he seems a bit argumentative...
I don't think this is a new phenomonen. I've heard lots of stories about RR 'people' being know alls who won't have anything they say questioned. From what I can make out they often get annoying 'know-all' customers who want to do it all themselves and so adopt a very defensive attidtude when you start showing an interest in what is going on...
I asked my guy if he has det cans yesterday and he started asking me if I knew what I would be listening for? When I told him I would expect him to do it as that's what I'm paying him for, he told me that he gets countless idiots wanting to have a go themselves... and then obviously don't know what they're doing.
Customer service isn't the strongpoint of plenty of people in the car tuning/ maintenance world... Hell, it took four years for me to be offered a cuppa at PowerFiat and even then I'm sure it was to stop me talking to Ruben while he was working