I have looked at cars at 4 different dealers & the fit seems to be the same at every car within a dealership but varies massivly between dealers. To me it seems like there may be a large amount of tweaking required & some dealers do it others don't.
I saw one car that was prepared ready to go out to a customer that day where the fit at the rear vertical edge of the sideescreen was so loose that you could pass a tennis ball through it & was assured that that was the way they all were.

The car shown above would benefit massively from changing the metal parts of the side screen to black & also loose the contrasting piping from the hood fabric, If its all black it looks much better.