Dealer says timing cover is leaking oil, what should I do?

[tmontague]

I agree with others, the slight overfill is not an issue. I always ran a slight extra amount of oil in my yard when beating it around the track and never had a single issue with blowing out seals or leaks.

Your plan to inspect underneath the car is a sound one and what I personally would do.

Please ensure you have jack stand before going underneath, redundancy is your friend. I know two people in my extended circle who are no longer on this earth due to failing Jacks.