This work presents practical results from a high lift-off stress measurement application on SAE 1060 steel using the Electromagnetic Acoustic Resonance (EMAR) technique. Resonance peak attenuation values were obtained for lift-offs up to 9.45 mm. A curve of the system's performance regarding lift-off variation is presented. Other sources of attenuation are discussed as well. Mechanical sources of attenuation, e.g., due to bonded materials, may affect the performance in a way that is indistinguishable from the magnetic coupling losses, thus reducing the maximum attainable lift-off.