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