How do you mean, swapping the axles and springs ? Are you going to get new leafs ?
I dont know how many leafs of different lengths are under it, but if there are, for example, four on each side, you could swap two leafs from the rear axle to the front axle, and vice versa... This wont make it 50/50 but i think it will make enough difference to drive smooth..
Nice dumper.. i could use one hauling scrap iron to the city... But my European car cant pull a big dumper like yours... Think about what would happen if i'd put that gooseneck on my trunk... teared apart like a tincan.. /forums/images/graemlins/grin.gif