Stuck on a problem with spinning wheel graphics

Hello,
I have a problem with this spinning wheel I’m working on. I have imported some png’s to my library that I want to use in the wheel but they get very pixelated after the spin. Before it starts moving they look normal and sharp. I tried using the smoothing property but it didn’t help. If anyone has any ides it would help a lot. Thank you.

You can see the swf here: (after you click on it press space to make it spin)[URL=“http://megaswf.com/serve/2375389”]
http://megaswf.com/serve/2375389