I just got thru replacing the tumbler on my 92 300CE. I used a thin, white painted clothes hanger that laundries use for dress shirts. I bent it into a "U" shape and cut the ends at a 45 degree bevel. I think that if you use a paper clip, then it better be a very thick one.

I really think that on my car the only hole that mattered was the top one.
I had to really ram it in, but once it was in, the whole thing pulled out quite easily just by pulling on the key.

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1994 E320 Cabriolet
1992 300CE (Sold)
1991 300SE (Sold)
1986 560SEL (Sold)