"gore" wrote in message
ideas or advice on how I can permanently fix this. I am by no means a
mason, and I think I am going to have a problem situating the stones back
in where they would actually do something structural rather than just lay
in there. Any suggestions?

My suggestion is to get some advice from a pro. This is, after all, holding
up your house. A few bucks saved today can be costly in a few years if not
done properly. There may be other issues that we can't see.