I cut the top off my mount too.
This is what the tangent arm looks like:
Here it is off the mount:
The one part of the tangent arm assembly fits around the dec housing like this:
-a plastic bolt should be used.
In looking at your photos do you have the gap where the tangent arm would ride:
You still may have the holes where the bracket arm attaches too.
Edited by Garyth64, 10 March 2025 - 07:08 PM.