How many yards of topsoil and stone do you guys haul in your 1 tons? We have a 2006 chevy 3500 dump i have not put more than 4 yards topsoil or stone in it, that seems to be about all it will handle. And my 99 F550 dump will take about 5 yards. I know thats over weight but I dont have to worry about DOT around here. I am just wondering how much weight you guys put in yours?