Ausgezeichnet! I had a Storm in the same colour scheme, unfortunately the paint was failing, as these usually do. And it was too small for me, so sadly it's gone. Is your hometown Karl-Marx-Stadt? Or should I say Chemnitz?
Oy ve, have the same issue here, been offered a unique, one-off tandem for restoration, will take up a ton of real estate in the shop and actually getting it here will require a truck. But it's cool.....
I have a Cirrus with the same problem, though not as bad as yours. I had a welder run a bead on both sides of the crack, but of course with heat treated alu this is always a 'ghetto' fix.