What about wood filler?
That would make the problem worse. I wouldn’t have anywhere to put the rod, and would have to dig it out after the filler dried, and I have no tools to do that with; the entire drawer is skewed. In fact, the entire cabinet is warped. The other file cabinet was so bad, I had to throw it out last year, when I got my stuff from storage.
I will just stack the papers I need to file back in the drawer. On top of the hanging folders and the file folders.
Of course, looking back, the skewed drawers are the reason I haven’t had any place to file anything, and why it was all on the floor. :o|