The window trim on the outside on the windows seem to be lifted up in some areas, is it worth it to try to fix this, or is it going to just be a pain?

 

The rubber at the bottom corners of my X300 is lifting a bit, but shining a torch behind it reveals no rust... Im not sure what's pushing it up, but I can't push it back down.

The trims running below all the door windows are blistering a bit too. They are removable, but cost a bit to replace.