Coyote -

A couple of suggestions:

1. Make sure your bike fit is correct. You'd be amazed at the effect of proper bike fit on your downhill riding stability.

2. Consider hiring a coach to ride with you and watch you descend. Working with a coach can be tremendously helpful - we can all give you tips here on weight, balance and form but that pales in comparison to having real time feedback from someone watching YOU descend.

3. As you know, keep your speed where you're comfortable. It'll get faster over time, but keep it in control.

Have fun!