I have a JLG T500J Gas Trailer Lift. I have two big heavy pieces that came with it. To me they look like frame stiffeners. Tried to install them, but not all the bolt holes line up. Thought maybe not for my model and forgot about them. I developed a reservoir leak at the front bottom tank seam. The tongue has a considerable amount of "flex". Suspect this flex transferred far enough into the frame to cause the leak. Then began to think about about the two big heavy extra pieces I have. Can anyone give more info on these? Thanks, KMo
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