For a quick way to protect the polymer fuel line you can cover it with a piece of split cable tubing or a piece of heavy rubber hose that you can split with a utility knife. Once you find a stainless Steel tube that can be exchanged in place of the plastic tube then remove the band aid fix. A piece of pipe insulation may work also just to cover the plastic fuel line up until final fix is in place. I'll check our Vegas to see if we have the same issue. These ideas won't correct the problem but may give the animals something else to chew on if they decide to return.
Angelo and Diane
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