Gert,
I had another thought after posting the last message. Because we have been talking in the past about conversion guns, I know that you are considering possibly converting this Greener to a large bore rifle, and if you decide to go ahead with that plan, weaker ejectors may be just the ticket for a rifled gun. One reason I don't like ejectors on rifles is that they tend to throw your valuable brass all over the place. I hate getting down on my hands and knees to try and find a few lost cases. With the conversion brass cases being smaller and maybe lighter in weight, the softer ejectors may be just what you want. If you do this conversion, I would finish it up first, then try the ejectors with the new cases before worrying about them.
You can always do something with them afterwards, but that may not be necessary. Many problems are best left alone till we get the whole picture. Bob