Flash 10 3D making text blur

I got a Sprite that I'm rotating with rotationX & rotationY. This converts the clip to 3d object. Which makes texts in it blurred.

When I'm rotating this clip back to rotationX=0 and rotationY=0, I'm setting: this.transformation.matrix3D = null; Which makes the texts crisp.

BUT, when I'm adding another clip to this sprite, that has z=400 (or any z). The texts just won't get crisp, the other clips in my sprite that I have been rotated seems to still be 3d even if i set: this.tr开发者_开发问答ansformation.matrix3D = null;

I've even tried to removeChild on the clip with z=400 when rotation is 0. And also tried setting matrix3D = null on that clip. But that doesn't help. Any one having any ideas how to "get rid" of the 3d of the clip with z=400? Or do I have to move that clip with z away from the clip I'm rotating (other things will mess up =)?

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As far as I understood your question is talked in this post of Keith Peters, you might want to take a look as he explains it really well:

http://www.bit-101.com/blog/?p=2391

"Basically, if you have a series of three or more nested objects, and apply 3D transformations to TWO of them, any clips nested between those two will become 3D objects (i.e. have a matrix3D property)."

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Set the transformation matrix to null...

myDisplayObject.transform.matrix3D = null;