The auto door locks in my '83 300D do not function as expected.

The vacuum lines within the doors/body have at least a few cracks or leaks.

Is it worth (easier) replacing all the lines within the doors/body?

Or should I take the search and destroy approach?

Thanks

__________________
JWJ
1983 MB 300D - > 430,000 miles - Deep Blue - Bilstein Comforts - 0-60 in 24 seconds - 27MPG
1985 MB 300TD (wagon) - > 275,000 miles - Manila Beige - Thule rack - 0-60 in 18 seconds - 22 - 25MPG
Biodiesel, Mobil Delvac 1, and Viton fuel lines!

It's unusual for the hard plastic lines to break/leak, the problem is almost always one (or more) or the actuators or the soft rubber connectors. Do a search on vacuum leaks, there are postings on the best methods to track then down. Some folks replace all the connectors as they go along.