As has been said, the stock jack does not go low enough. We use separate hydraulic jack to lower the tongue on to a piano dolly that is only about 3 inches off the ground, flip the mirror, disconnect garage door from opener and push it up higher by jamming in a block of wood. Push her in and mirror just barely grazes rubber seal- I think we get it in under 83 inches- I thought it was 78 inches but not sure.