Your first photo comparing the curvature of the shoes seems to indicate that they are not the same curvature, which would say you do not have the correct replacement shoes.

How does a new shoe fit the inside of the drum if you hold it in there with the parts off the car? The curvature should match...

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02 S500
92 500SL
92 400E (Sold)
87 300E (Sold)
83 300D Turbo (Sold)
75 300D (Sold)
74 240D (Sold after 20 years)