Well if your chulent is too watery, my first suggestion would be less water.
Other than that, the only secrets to a good chulent are this:
http://www.theyeshivaworld.com/coffeeroom/topic/whats-the-secret-to-a-good-cholent/#post-870621
and this:
http://www.theyeshivaworld.com/coffeeroom/topic/whats-the-secret-to-a-good-cholent/#post-870625