Tom, if your head gasket is not leaking, then I wouldn't touch it.
The leak at the upper timing chain cover is not an expensive gasket to replace to fix the leak.
I'd just do that.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".