----- Original Message -----

> Personally I would try some foam insert before I would mess with
> turningvanes. AS your sketch looks you will not be done with a
> vane, as the air
> still slows too much because of the excessive retreat of the the
> upper duct
> wall....
>

Heh, Al.  TJ is smarter than I am, 'cause what he suggest looks a whole
lot easier to implement, and after looking at it just a short while it
looks much more correct.  Try what he suggests.