Most chucking can be prevented by increasing your pin weight. We have no knowledge of your tow vehicle, not the model length/weight of your RV. Hard to help you without this. And the brand of pin box.
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Jim and DW 50 years Brenda
2018 40rssa and 2021 Jayco Eagle 40'
2019 F450, ruby red
Harley Road King & sidecar
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