sixto,

I use a Craftsman deep socket, 27mm, too and also had some contact with the return line nipples. They are pretty soft stuff, so I just pushed them inward slightly and the socket fit on fine. I noticed one or two were already slightly bent, and the socket fit on them, so I "adjusted" the others to suit. If you push too hard they can get so close to the fuel connection part of the injector that the little hose is more trouble to get on and off, but a large slot head screw driver can be used to push them back out. Good luck, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)