Yeah I've seen some... And I'm aware that they're sown in a very specific way, and that they have several rods on the top and at the bottom. But I kinda ignored that because I found some images where that wasn't the case... Of course I didn't download them.
In the end the thing to do here would be to start over, remove all the cloth, glue 5 or 6 rods in place, reapply the fabric and move on...
Not sure I'm ready for that tho.
We'll see.