I decided to sew the 2 panels together hoping this would be the solution.
I then realized the hooks were leaning so far forward the liner would fall off taking the curtain with it. You can see that here; the 1st pic with just the liner kept the hooks level. But the 2nd pic with both the liner & curtain made the hooks lean too far forward.
I took off the curtain and added regular scotch tape here. I made it kinda messy so the liner had something to hold onto.
So, there’s my fix!
Check out the original post here; Making an Extra Long Shower Curtain from any Curtain.