Making this Animation Smoother

Hey everyone,
I’m working on this site and I’m having a bit of trouble with the smoothness of an animation. I’m still early on on this site… Here’s how the rays spin. They are set to spin every 10 seconds. The rays are a vector shape which is masking a full size layer of blue colored wood texture. So when that way all the pixels align on the rotation and all. Anyway right now it seems kinda jumpy and not very smooth. Is there anyway to make this better?

Flash MX 2004
Flash 7 export.
AS 2.0
30 fps
animation is 30 frames long

any suggestions on how to make it smoother?