Both sides of my headliner for the t top are bowed down on the corners..Is there a fix to this other than replacing both liners?

Thanks!

Can you remove them and see why the retainers are not holding them up against the bottom of the T-top?

It looks like because they are bowed down so much that the velcro type  fasteners are not strong enough to hold them flush against the inside of the T Top. It is mainly only the inside corners. The rest of the velcro type fasteners are holding fine. Thought maybe some heat say from a hair dryer would make them soft enough to help bend them back? I'm not sure though.

You could try removing them and placing them on a hard surface like a table or a countertop.  Then put some weight in the center of the back side and gently warm the corners and see if it would settle back to the original shape.  Due to its shape, you might have to play some spacers under some of the corners so that it sets close to level.

If it does, let it cool and then remove the weight and see if it retains that shape. If you don't have a heat gun, you can pick one up at Harbor Freight for around $10 to $12.

Thanks.

Thats what I'm going to do. I have a heat gun. I hope it works! 

Let us know how it works out for you.

They're made out of formed cardboard covered with vinyl wrap. If the heat doesn't work, you could try misting the back with a spray bottle of water (lightly, not soaking wet) and then weighing it down as you suggested above. It ought to retain its shape when it dries.

Thanks

Work great! Took a heat gun to it with weight in middle. Took a while but got it back to 90%.

However, Some idiot before me decided to put a epoxy on all the velcro type fasteners and completely ruined the fasteners. Looks like they tried to fix it before. Now, I have to replace all the fasteners and hope they all hold on the headliner. Not to mention the t tops as well!

I'm guessing the "Velcro" fasteners were really the white nylon ones w/ little spherical tips that interlock when pressed against another one.  No alignment is req'd and they just snap together.

Glad the heat method worked for you.  👍