One of the quirks with Finale’s note spacing is that the very last system of a document will often have disproportionately fewer measures than the rest.
One option is to use the Fit Measures tool in the Utilities menu, but then the note spacing can be inconsistent between systems.
Finale’s Reference Spacing Width feature, found in the Music Spacing > Spacing Widths… section of Document Options, provides a solution. The setting allows you to reflow and rebalance the note spacing of measures quickly. more >> “A Fast Way to Change Music Spacing Reference Width in Finale (With Keyboard Maestro)”