A call to the manufacture may help. I would make sure there is not a factory seal or something that may be compromised by unscrewing it. If it's possible it should make that tank a little more user friendly.
RMc
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2018 Ram 3500 SRW Aisin Trans. HO CTD
Air Lift Bags -Curt 16K Slider Hitch
2017 Laredo 350 FB
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