Mine is being done in a few weeks.
Spoke to the guy and he measured the paint thickness, if its their paint job then they should do it! The touch up is only trying to rectify the rust thats already there!
On a side note, dont go in all guns blazing holding print outs from the website
When I spoke to the guy he said people come in yelling and screaming that it should be a warranty job and they want to speak to the manager to get it done etc, when in fact they will happily to it if you just give them a chance to look lol