When your seat is sagging because of a broken spring, the solution is obvious. When it is sagging because of a worn horsehair padding, you can also add a kokos-matt over the horsehair padding and under the seat upholstery. We used to do that quit often in the W123's with sagging seats.

greetingz,

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1990 300SL-24
1993 C250D with a minor 600+k kilometer
www.MBenzNL.com(the Netherlands)