Given the illustration above:
Are there any tips on how to ensure that the beam load is correctly distributed across the three posts?
All posts are adjustable (up/down) via hex nuts so I have full control over the height of each post.
[Edit for clarification]
My concern is how to ensure that all posts are actually loaded as they should given their respective position. For example, if I lower the middle post (via hex nut), almost all of the load will be on the outer posts. On the contrary, if I make the middle post higher than it should (via the hex nut), then it would be incorrectly offloading the outer posts. That said, I am trying to see how to properly adjust the heights of the three posts to ensure that each is bearing the load it is supposed to do.