Transparency Issue with Mist

I am having a slight problem. With Mist, Blender apparently adjusts the transparency of objects to render mist…as stated by Blender here (http://wiki.blender.org/index.php/Doc:Manual/World/Mist

“Because Mist works by adjusting transparency, this can sometimes cause objects to be partially transparent when they shouldn’t be. One workaround is to set the Mist settings as desired, but turn Mist off. The Mist data is still available for compositing even though it is off. Use Do Composite and the Nodes Editor to feed the Mist pass to an AlphaOver to blend the background color (or a render layer with just the sky) with the rendered image. This produces the mist effect but since Mist is off the object transparency (or lack of) is preserved.”

So I am getting some bleed through of the cloud background into the back aircraft (see attached). So I tried to setup these nodes to feed the Mist pass to an AlphaOver as stated. But I am not getting rid of the transparency issue. I’ve tried feeding the Mist pass into Image and Fac slots with no luck. I am sure this is because I don’t have the right node setup.

Any ideas here?

MARKING THIS AS SOLVED SINCE I RECEIVED NO RESPONSES. STILL HAVE NOT REALLY RESOLVED THE ISSUE.

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Problem solved - See Andrew Price’s tutorial on Subway Tunnel at www.blenderguru.com