Thanks for the quick responses!

I'm always switching around. I switch between the clip-on aerobars and the hood mostly. There's something uncomfortable about the angle of my drops. As soon as I go into my aerobars from my hood, my speed increases by 2-3 mph without any extra effort on my part, and it makes it easy to put in the extra effort so I really end up giving myself a good workout.

I wonder if I could post a picture of my stem on here and you could tell me if it's possible to get it any lower.