Some of the lines go to more than one pod.

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

If you pulled off the rubber connector that connectes the plastic Tecalan tubing to the switchover valve and pumped up vacuum on each line.........then, you did the right thing. If you did anything with the manifold, you didn't do the right thing.

I'm just unable to follow your terminology.

Two of the lines are split downstream and go to two different main air door pods.

If you have leaks in the main door pods, you'll need to pull them and test them individually........but, I'm betting both are shot.