Parking on a grade

[RADHAZJOE]

Our driveway has about a 5 percent grade. Is this safe to park on, front end down. I have gotten several good 6 inch high chocks for under front of all wheels, but can the landing gear stand the horizontal pressure? Is there anything I can do to help it, like maybe move the bottoms of the landing gear forward as much as possible when they first make contact so they are more vertical after the rv is leveled.[/size=6]