My headliner on the cb9 rattles really badly and is falling down a bit. Its become detached from the roof and makes a lot of noise. The clips are still in place so its not that. Can't figure out how to fix this, thought about using a utility knife and cutting it in half and glueing it, I know that's probably the lazy half assed way but I don't know what else to do.

Anyone know how fix this? If you do please let me know.

Thanks.