The compliance plate has to be removed.
It is fixed into place via two nails.
These things are really interesting to look at, a steel nail.
They have a cork screw thread, I guess you could call it.
Anyway they have to come out so the plate can be removed.
I have a steel shaft that has a rounded end on it. Place the rounded section onto the internal end of the nail and pull back. The nail will pop without to much effort.
Ji