Hey Tony, This past Fall I ran across a similar problem on a C-160. Long story short, somewhere along the way, one of the previous owners had the magnets let go in the flywheel and just "willy nilly" glued them back in. The poles were reversed on 2 or 3 of them; hence low AC output. Since it quit charging on you about 6 months ago, this ain't your problem but I thought I'd throw it out there for someones "future reference".
You should try another stator to see if that fixes the issue.