I changed the mesh size on the board and dead-weight to a 20 mm element size.

If you can upgrade to 2020R2, I can send you my archive.  Otherwise you will have to send me a new archive.

If you have a second computer, you can install the free Ansys Student license and open my archive. Don't install the free Student license on the same computer as your full Ansys license because those two installations are incompatible and you might mess up the full license.