I have a 35' long, 20' wide area that is slightly sloped that needs to be leveled and sodded. The ground needs to be leveled before we lay the sod. What is the best way to do this? I have an idea in mind, but want to hear your opinions. The slope is not terrible, but dirt will definitely to either be taken from the high spot and put in the low or possibly bring some topsoil in. Would tilling it and tamping it down be a bad idea?