slow moving slides

Have you tried opening a door while bringing them in? Not sure of going out with that theory. But during a walk thru, we were told to leave door open so air has a way to escape when closing it up.

I also hook the umbilical cord to tow vehicle with the fiver and start the engine, then put out or bring in slide. With the motorhome, I would just start the engine unless it was the Monaco I owned, which the ignition key had to be in the off position.