I have an issue with this Simulation. The Riser has to take 25kg weight on its top and the weights have to gradually pass thru the Ribs of the riser to internal ribs of the body. I think something is not correct with the boundary conditions. Could anyone point me to the right direction ?

These are 2 PE parts.

Please download the files from below:

https://wetransfer.com/downloads/a99ba0b70b1116cf33ad1c060805c8a720191206012056/2eaf5c6747dbaed0cebdae28a4eb158820191206012056/dea565