I have to make a pilgrimage back to the dealer about my driveline noise issue. Getting noisier at 46,000mi, I made note of it at 27,000mi and at 34,000mi, just before the warranty ran out. Anyhow, I want to put the stock injectors back in (KEEP THE FUSS DOWN AT THE DEALER). Can I reuse the copper washers that are at the nozzle end of the injector? I will put back the DDIIs after this whole thing gets settled