Hi @jens.cambierXJHLT,
I used to build "catalogs" of blocks for my staff. In doing so, I would frequently have to adjust the scale of the blocks in the page so that they would present properly.
So, rather than copy and then paste, why don't you drag them in from Design Center or drag them into a Tool Palette?
Let me know if this makes sense and if you need more information on how to do this.
Please select the Accept as Solution button if my post solves your issue or answers your question.
John Vellek
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