I just read your last post and I was mystified to why you would drill the (T's) in the main vacuum booster line.
the engineers purposely designed a certain size orifices to restrict the vacuum, and not to take away from the brake booster.
You should have not drill out the orifices in the main vacuum line that runs between the vacuum pump and the brake booster reservoir !
I would suggest adding inline vacuum orifices to create a restriction to the other vacuum devices.
Here is some orifices you could try to match your systems.
Color: I.D. P/N:
Yellow……2.0 mm..……..1162760929
Red……….1.1 mm….…….1162761029
Blue………1.0 mm…………1162761129
Brown……0.9mm….……..1162761429
White……0.8 mm…………1162761229
Green……0.7 mm…………1162761329

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1986 190D 5 cyl. 5 speed manual White (215K),
1983 300SD Silver blue (103K)