Thanks, Kevin.
Then I need to find out how to make sure the ring doesnt rotate. What I cant see is how the ring is supposed to, originally, be fixed? It is tight fit into were it is assembled, but nothing to hold it from mving around. Only thing is if it is the pressure from the starter when assembled, is supposed to be enough to tighten it..?
Looking at your solutions, again with noe experience:
If I should weld it, it has to be in the place where it is fitted in the video? It will not be possible to weld it on the starter.
And the hole-drilling seems like the easier solution, especially as I dont have any immediate access to a welding-machine..

Do you think somehing glue-ish, locktite or similar could do the trick or be worth trying..?
Again; thanks for your help and patience!
Br
Roger