X4 on that as well. The idea is that you ride around on the "regular" spring pack, resulting in a better ride. Then when the weight is added and the back of the truck starts to go down you come in contact with the overload spring. At this time you are now adding an extra spring to the mix to help with the extra load. So, as mentioned above, removing the overload springs will not do anything for you other than: having a saggy butt when load and headlights in the trees at night. I honestly can't see any reason to remove them.
Good luck on searching for a better ride. I'd sure like to know what you find out. Posted back and let us know what you find out.