Is there a way to manually increase the number of unit types from a max of 25 to 45 or 50? I would gladly do this in my own version of the model, but am not sure how to accomplish this.
Unfortunately, there is no easy way to add additional unit types to the MF module. I would recommend adding a new tab to the model, drop in all of your unit types in that custom tab, and then combine similar unit types in that custom tab to get to 25. Then link your custom tab to the MF-RR tab.