!969 Dart, the needle dropped below "0" at rest, and speeds measure 3 to 5mph slower than actual. Speeds get closer to actual approaching 60 mph. What happened and how do I fix it?
![Speedometer_2.jpg Speedometer_2.jpg](https://www.forabodiesonly.com/mopar/attachments/speedometer_2-jpg.1716290143/)
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