[DutchmenSport]

432, the only problem is, it won't last unless you put some kind of glue or calking in that groove. I did the same thing initially, and after a couple pulls, it came right out again. I even tried rolling the part that goes into the groove so it would catch better. Every time I tried that, it it pulled out again. Once I put some adhesive in the groove, it didn't pull apart again.

I'm just sharing from my experience, and oh ... don't be surprised if the rest of your shades do the same thing, eventually.