[Porsche-O-Phile]

And tell him, "replace these at your cost - correctly - or these won't be the only removed nuts I'll be holding in my hand"

This is why I am adamant about doing all my own work, despite the inconvenience. Way too many idiots in this world running around with air tools/power tools/paint cans/you-name-it. Stupid can result in big headaches fast when combined with any of the above.