I want to help out a friend by grading his gravel driveway. The driveway is very steep and he has trouble getting a car/ truck up the driveway w/out it getting stuck. He had a local company spread crusher-run but the problem (to me) seems that he needs to have the ruts graded and smoothed. I have a B2710 Kubota and I'm looking at using a power rake to clean-up the ruts and smooth out the driveway. Is the best method? Any suggstions on other tools/ implements to use? Do I need to worry about putting a crown in the driveway? I've seen other posts that discuss the use of a power rake but all of them are grading a flat road/ driveway. Thanks!