Chevrolet Reimbursement Center ChevyRefused to reimburse for damage caused to vehicle in reference to Recall #9047 Detroit, Michigan

I own a 2000 Chevy Impala that was listed under the latest recall for "Engine Compartment Fire". The recall came out April 14, 2009. A few weeks prior to this recall my engine started missing. On April 12th I took my car to the dealership. After running a diagnostic test, they found I had a burnt plug wire towards the back next to the exhaust manifold. They put a new set of plug wires on and handed me a bill for $280.23. Just recently I submitted a re-imbursement claim to Chevrolet which was denied because they said this would be normal wear and tear due to the mileage of the vehicle. Now, if you read the cause of the recall and the solution to fix it, it does not add up. The cause being drops of oil upon hard breaking causing a fire and the solution to be ADDING ADDITIONAL SUPPORTS TO THE PLUG WIRES BRINGING THE WIRES OFF THE EXHAUST MANIFOLD. The problem I had was a DIRECT cause of the solution that they are proposing. Please help.