Sunroof issue. One side is working, the other is so stuck I cant even move it.

Trying to figure out how to remove this rail when its extremely stuck.
What am I missing? Theres no bolt to remove. I sprayed a lot of PB blaster in it and still not moving. Also tried to push it with a hammer and flat head and still not moving.
See video. https://streamable.com/87ngb7
See image. https://ibb.co/Bgq82ky

 

Do you hear anything on the bad slide like a click or a humming?
Try tapping it with a hammer (on both ends) and see if it breaks loose. It looks like you have quite a bit of gunk in there.

 

I been trying that with a mallet and no luck. I dont have any idea why its so stuck but looks like the other person that was trying to fix it messed up the aluminum rail. Theres no other solution other then just taping it and finding a guy to fix it.