It will a help us a lot if you give us more info and photos speak a thousand words as Brian said. What is the material make up of the drive and what is the condition (hard packed or loose, rutted, potholes, wash board, etc). How is your grader set - blade depth, scarifier setting etc. Your travel speed. All these things make a difference. And most important what happens or doesn't happen when you grade to make the result "not very good".
gg