That dribble means a leaky MBC and should be fixed immediately. It also probably means liquid in the booster.....

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

The dribble may or may not mean a leak into the booster. The MC has a weep hole at the base of the MC. This is to let you know the MC internal orings are leaking. The leak may or may not flow into the booster. That depends on the condition of the MC to booster seal and which oring is leaking.

I would not not bend the brake lines to change out the MC to booster seal. The MC has to move out about 1 inch to clear the booster. This amount of movement of the brake lines is a little to much. So to replace the MC you need to disconnect the line and if your doing that, you might as well flush the system. Also replace the rubber lines to the calipers as suggested while you have to bleed the fluid in the lines.

Dave

__________________
1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car

Ok, I will buy the O-ring between MC and booster, and the vac pump kit, and go from there. However, I cannot find the O-ring to buy. Anybody have the part # for it?

__________________
'79 240D 4 speed manual 105k miles