another thing could be is the cut outs for the pipes to installed in the tanks. ran into that on my good friend's TT. We had to cut the pipe off at the tank to get it out. And the we installed a rubber hub connector at the tank never had another problem after that.
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Bob & Carol Washington St
2017 HC HM352RL 2018 Dodge 3500 laramie CC LB 4x4
Curt Q25 with puck system, Factory air bags
Happy Trails
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