Is there a meaningful impact of the thickness of excessive TIM? I suspect the answer is no given the clamping power of the mount will get the paste down to roug

Is there a meaningful impact of the thickness of excessive TIM? I suspect the answer is no given the clamping power of the mount will get the paste down to roughly a consistent thinness even with over-application. What about any excess TIM off the edges drawing heat away from the heat pipes/cold plate?