I have an 03 EX4WD with approx 112k miles. Have been hearing the grinding,clunking sound so often associated with the need for replacing the rear diff fluid, but with the vehicle up on the lift at the Midas shop the tech showed me where he could press up on the right rear wheel and cause the rear diff and drive shaft to move up and down due to a worn out rubber differential insulator, p/n 1095768. Has anyone else run into this problem?