just out of curiosity, doesn't keeping the doors closed put strain on the torsion bar? Keeping them open would take all of the strain off of them ( they would in effect be "unwound") look into getting piston locks. They are little clamps to put on the pistons so they will take all of the weight of the door. I doubt some caretaker is going to remember to open and close the door everyday and I think that would put premature wear on them. What do you guys think of my 2 cents worth? Joseph vin 2850