I had a bad screen on my poptop.  I got a screen replacement
from Jonce--that I "glued" in with a magic latex glue he
send.  It worked perfectly.

Later, my poptop failed--fabric failure along the bottom edge,
so I replaced the whole canvas.  This setup uses velcro on
the vertical parts of the screen and a zipper across the top.
It's OK, but I would rather have the arched zipper that goes
up, around, down....  Since I have the side vents, I don't
care as much about the front one.

Anyway, I would jump to what Jonce sells in an instant if
that was my problem.  I have his sunscreen for my front windshield
and when it is 90 degrees in Moab, it is wonderful!

Richard