Looking to find out if there is some easy, or straightforward, or good way of doing this. I will be using a trapeze tailpiece with my ES bass that looks like this:

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The problem is that the bass of the "hook" part of the tail piece is flat where it attaches to the guitar...

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...but the butt end of the guitar where it attaches is curved.

Any suggestions for how to bend this piece in such a way that it accurately takes the curve on the body of the guitar?