Need someone to add a thumb disc and jimping to my Surefire Delta EW-04

[justin2992]

I have a versions of the Sure Delta that doesn't have the thumb disc or even any jimping.
This is what my knife looks like:

This is the version with a thumb disc:

 

[Chuck Gedraitis Knives]

The jimping could be done with a carbide endmill or a diamond file. Drilling and tapping a hardened blade for the thumb disc screw will not be possible.