I'd be making a wooden template to match the required shape and then work it to shape with a soft faced hammer, this should remove any risk of kinking
Regards Dave King https://nevertoolate2.bandcamp.com/
I'll give it a go, if it looks like it's going to warp the top face, I'll fabricate a shim that blends in with the black sides. I'll have to be careful not to pop the gold plating off. I'll keep you posted.
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