Hey there and thanks for asking. If you've published your game, you should be able to update it as much as you want until the deadline. So, by all means, test it as many times as you can, then test it again. Just update your uploaded version, but make sure that the version you upload is the one you want the judges to play.
Unfortunately, I cannot be a tester, as I am helping run this game jam. You're going to want to test this game as much as possible, but no one associated with Komodo, or someone who is a judge, can be a part of that. :-)