After some advice from Pete Ganzel (thanks allot) i started to take away the sides from the flash body.
I donít take any responsibilities if other doing the same. This modification will ruin the grantee of the Flash and maybe also the Camera.
Using a thin sharp knife starting to lift the glued sides away.
Then removing the screws on both sides (2+2)
Then gently bending the flash body apart
†Then it was ready for modification.