Scrolling list strobing/flickering help?

So my app looks really nice and works pretty well. It looks native for the most part UNTIL you scroll the list of items. When you sroll the list, it's not as smoother as the iPhone native scroller. This scroller appears to flicker and has a strobing effect. It just doesn't look right. When you scroll you can instantly tell it's not a native app.

The list is a movieclip with a 10 or so items. Each item is made up of a check box, text field, and another movieclip. I'm moving it by updating it's y position based on the mouseY. My app is set at 60fps. I've done a test where the moveclip just has a large image. When you scroll just the image, it looks pretty nice. But when you return to my list of items, the effect returns.

I've noticed now that other air apps have this same effect. Maybe it's just a limitation of flash and air?

Update: If I go real slow with my thumb, the list seems to jump to the next y position. If I look at a native app, it doesn't seem to jump to the next y position but glides. Maybe just updating the y position to another hard number is causing this.