Send the cut off bit to me as I'm a tad short in my storm cover calculations!
Yet another digression.....
....at least I'm consistent.....
Our design and making of the storm covers is going remarkably well, thanks to some help I've got from members here. We're using the plastic sail track (sourced from Paskal as recommended), the sikaflex 291 (again, as recommended), Kedar rope track and the cut down awning side walls. The only problem is getting the sikaflex off the hands as we accidentally bought black.....we hope it wears off as turps and similar doesn't move it. But it sticks the sail track beautifully...no screws or rivets! So far.
That ARB gear is probably better quality than the super centre stuff....and my six year old ARB awning is starting to show signs of wear, and the plastic roll up clips are broken. I've replaced it with a bungee. There weren't many others on the market when I got my awning and the prices have certainly dropped.
I just looked back at your photos and can now see it's the new ARB model.....is it an improvement?