I have a very specific order and design I want the portfolio mosaic to appear in. I tried to get it by adding the portfolio items in the order I wanted thinking they would just fill in in the proper order, but it seems to move things around unexpectedly.

Is there any way to have complete control over mosaic?

Found the answer in another post. For anyone with this question, this plugin is a thing of beauty:

https://wordpress.org/plugins/intuitive-custom-post-order/