Yes... I did mean can I avoid disconnecting the MC lines. There are several of the metal lines and I am trying to keep it simeple. My goal is to try just replacing the seal first to see if that is causing the vacuum leak. If that fails, I'll replace the booster. The booster is not holding vacuum, but it may be that seal between the MC and booster.

Thanks...

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Mr Goodfahrt (pronounced FAIRT... means "good trip" in German)

1982 300D Turbo Pastel Gray (off-white) 200k+(?)
newbie but willing