2003 E220 CDI Engine OM646.961, trans 716.649 - manual shift six speed, 138k miles Every so often when I let out the clutch in 1st gear she pops out with a hellacious bump and of course the engine revs away. I put it back in and she takes off as normal. Happens more often if I'm in a hurry. Sometimes the shifter feels kinda' like putty when going into 1st, and then she usually pops out. Doesn't happen very often though, maybe once a week if I'm careful. If it feels soft (like putty) and I take it out and put it back in it clicks in nicely and works fine. Hasn't gotten any better or worse in 40k miles. Anybody ever had a similar experience that you were able to fix, and can share some advise? Where should I look first, I haven't even put it on a lift yet.