Tried every which way - put the sides on first, just using the straps, throw windscreen cover on, try to stretch the sides to reach the windscreen cover. Can get one side to reach, but then the other side is a good couple of inches short. There's no way it will stretch any further, and can't pull the side covers any further forward. Two of us spent over an hour trying to get it to fit. Thank goodness we're not on a campsite, re-living our first air awning embarassment! (And hopefully, the neighbours were not home at the time either!!)