The sequence as advised to us by A.L. was to pull the rear down (don't clip), pull the front down (don't clip) then fasten the rear clips followed by the front clips. Also advised to leave the door open before starting to pull the roof down. I recently forgot about this, pulled the rear down and when I pulled the front down the air pressure pushed the rear up again! And yes, the reason for rear then front is that if you pull down the front first, the 'beak' can hit the front of the van and potentially mark it.