well i know how to turn it on and whatnot, but i have EXTREMELY rocky clay soil... hard clay too, in the middle of the NV desert, and when i made my first pass on it with the tiller it just stirred up the top layer of dust. do i have to go back over it 50000 times, or can i wet it too make it easier? and it only goes about 5 inches, do i need to dig up what i till, till again, and replace the soil? this is becoming a huge pain in the a$$. thanks