I’ve just fitted mine. It was a bit of a faff but not terrible. I clipped in the side brackets first. It’s a two person job. I need the bump stop to stop the rear window going down. I put a toothpick in to hold it for now as the bump stop is on back order. Then I clipped in the front brackets. I loosened them first with the little red key. Then tightened them up. The side brackets at each corner are fitted using the same key. Then each rear corner fits into a channel. This isn’t easy. Then you straighten the side hinges. Make sure the rear window adjusters on the frame are behind the rear bar This will make sense when you fit it. If not done right the rear window will not fit. Don’t as how I know. Then it gets tricky. You have slide each side widow up the side channels. And they are proper tight. I used some furniture polish to help them slide up. I think silicone spray would be better. Then zip the side windows in. Making sure not to break the zip. The zip is strong but small and easy to kink.i hope this makes sense. It’s fairly intuitive once you start. My mistake was fitting the windows. Zipping it all up. Then realising the rear frame adjusters were the wrong side of the rear roof bar. That was a nuisance. Hope this helps in some small way