Update:
Contacted Mr Hartmann and rec`d ther following:
“Hi David,
Yes, you have to be a little more careful with the copper in the Onyx . They are not the same strong as the Hemp or the carbon Fiberreed.
How did you like the sound of the playability of the new Copper Carbon Onyx?
We will send you a new one. Let us know the strength, your address and which instrument.
Best regards,
Harry
I always appreciate good customer service.