When I first launch the Find utility panel, it pops up at the bottom but half of it is cut off so I have to drag the panel up to expand everything. If I close the panel and re-launch it, it remembers to use the same height that I specified earlier. But if I close the lister and open up a new one, launching the Find utility again pulls it up in the initial position so that it's too short.
After changing the size, Settings > Set as Default Lister.
Thanks. That worked.