I would stop by a home supply somewhere and pick up several 2X2's of the lengths needed to lay on the floor and as Steve suggests.  If you don't have a saw, many home centers will cut the pieces to length for you.  Carry them in a bay or closet even after the shop in Acacia (or wherever) finally resolves your problem;  if solenoids ever act up allowing extension on the road again, you'll have them handy.  Been there, done that.  Or you might place them prior to each travel, as a routine precaution.
Joel