This is a major project I undertook without fully realizing the scope of work involved. In the end, it was absolutely necessary (for safety) and worth the frustrations I encountered.
The working mechanism, above. I still couldn’t get into low at this point. When I had the transmission rebuilt, I learned that the linkage at the transmission was wrong as well.
And here’s the swing-away action, in motion:
Swing-Away Mechanism in Action