Simple tween increases file size by 3x!

I have a large complex shape that is constructed of only 3 symbols.

This keeps the file size of quite a complex animation nice and low (14kb). However, when i take the shape by grouping it, and rotate it, the file size goes up to 44k. I don;t under stand why, since the tween only uses the symbols that are already resident in the file!

I would like to know how to do the tween without the file size rocketing, becuase many similar tweens need to be done, making the swf huge! :frowning:

Thanks for any help

The files can be found below, the ‘1’ being the small and ‘3’ being the large one:

http://robin.netmag.easyspace.com/flare/Wheel/1.html
http://robin.netmag.easyspace.com/flare/Wheel/1.swf
http://robin.netmag.easyspace.com/flare/Wheel/1.fla

http://robin.netmag.easyspace.com/flare/Wheel/3.html
http://robin.netmag.easyspace.com/flare/Wheel/3.swf
http://robin.netmag.easyspace.com/flare/Wheel/3.fla