Thank you for the clarification. I would imagine that it is fairly difficult to tell if the ball joints are welded just by looking at them while assembled. I should have done all of this before it got cold outside. Today it was 35F.

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1992 400E current
1988 300E sold
1973 280C totalled
1973 280SEL never got it running
1971 250C my first love but rusted out