Sadly, I Can't manually use third gear, I could not twist my hand that far to select it.
Perhaps it has to do with my length or the angular I welded the clip-ons.
But one thing was sure, needed to change it in order to use the close three speed gear box.
First, I made a quick setup to see if the three speed gearbox was working.
Once I know it was Ok, then it was time to make it perfect.
Internal off the Melior.
Shortened pedal, welded it back on.
Grind it clean.
Starts to look Ok.
Start making adaptor.
Mounted, with lock clips.
M6 with angular.
To make sure it can twist.
It can twist now.