The cables should not get hot enough to make a noticeable difference and they would all expand the same amount. The system looks like it will really work well. I guess I will find out. It has to be better than what I have now. The carb bell crank arm on the drivers side has a 1.5" long rod coming off the linkage at 90 degrees to make the reach. It is what is needed to have synchronized carb opening but it is flimsy and doesn't work well.