OHH, only now I noticed it can be opened :person_facepalming: :person_facepalming: :person_facepalming:
Well, thanks for the tip and for making me notice it can be opened 
Meanwhile, I’ve done the required transformation on the Lumintop Tool AA 
I re-shaped the lens and used a 1 mode driver from a SK68 clone! It is now a small twisty and is working quite well!
Thanks for the tips on the transformation on this, too 
:+1: