Welcome aboard, if you were close to me, I could forge just about any type of hook to use between the snap hook & screw eye. Not knowing if you have the capability to forge or where in the world you are located it's hard to give a concise answer though. This may give you some ideas. Pictures of your hardware might help.
https://www.flickr.com/photos/cloverdaleforge/sets/72157678651367780/