Seems like you're name fits. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
One of the most important things I learnt went I first got into Mozzies was not to be afraid to heave on the downhaul. I found I was sailing with my sail too full. Pulling on the downhaul opens the top of the leech and improves flow over the sail. It also flattens the sail. It is far more important than outhaul.
Try setting your boat up on the beach or at home when it's not too windy. Set the outhaul so the foot of your sail just touches the boom, now play with the downhaul and walk aft of the stern and look at the sail. Better still get someone else to pull on and release the downhaul while you watch the affect from behind the boat. It'll show you what happens to the sail shape when you work it.