Replace them.

I'd have gotten the Radio South Pro CA hinges, they are pretty darn bullet proof but the ones you describe I had on my first Funtana and they held up very well so no the slot isnt an issue.

The one trick to installing CA hinges is take a small drill (smallest in most drill sets, I forget the size) 1/16th maybe? Anyhow drill a hole down into the wing and surface in the center of the hinge slot, this gives better access for thin CA to wick into the hinger farther.