We have had our 2021 Defender 90X since May 2021. The wiper blades vibrate when driving at a higher rate of speed down the highway due to wind/shuddering/jitter. We have had at dealership and no correction was made; we have even replaced the wiper blades to ensure they are new and not ridged. Anyone have another suggestion if you have experienced this issue? It makes an audible sound in the vehicle when driving due to the vibration.