How long do parking brake pads/shoes last? Tried to adjust the parking shoes, with no success, I think the previous owner maxed it out, could not turn the little wheel with a screwdriver to engage the brake. Should I just replace them and start fresh? 1990 300SE with 110K miles.

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1979 Black on Black, 300CD (sold), 1990 Black 300SE, Silver 1989 Volvo 780, 1988 300CE (vanished by the hands of a girlfriend), 1992 300CE (Rescue).