Dealer Replacing Valve Stems - What Else?

[absentmathis]

Took the X in to the dealer for a warranty claim on an oil leak, and they tell me I need valve stems. I hadn't noticed any of the symptoms, but warranty is covering the repair so I've got no reason to argue with them.

My question is this - is there anything else should I pay to have done at the same time? I'm not sure what method they're using to do the seals (I will ask as soon as I can get the tech back on the phone), but the last message they left did say it's a 26 hour job. The vehicle will be under drivetrain warranty for another year, so anything on that front I'd prefer to defer but at the same time don't want to stuck with a bigger bill 13 months from now.