The original left-hand piece can be slightly re-curved to function as the new left-hand piece. But, a left-hand piece cannot be flipped to use on the right hand side as it is too short, and the channel is not symmetrical. I could overcome the length problem but trimming the wider backside would be a major pain.
Julian’s suggestion of a chamfer on the panel to allow for the increased thickness at the joint is what I have been planning on.
But remember, the factory did successfully bend this channel and did successfully braze it together.
Please remember I am asking what the best way is to join together two pieces of brass. I believe it can be TIG welded and I am still looking for confirmation of that.
And I still need a craftsman capable of performing the task. I have considered silver solder here at home and will be exploring that path with my remaining scrap pieces of trim
Larry