Things like a bad switch that you have to fuss with I call hidden stressors. They don't seem like much at the time but when you don't have to deal with it after fixing it, it feels like a weight is lifted.

Michael

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Usta haves '69 250/8, '76 280C, 1971 250C 114.023, 1976 450SEL 116.033
Current have, 1983 300SD 126.120