I can vouch that this fix works perfectly, it only took about 15 minutes. I had to drill the hole at a different angle than the directions show, but if you use a mirror as he says, you can easily figure out the correct angle.

I realize this fix might not work for everyone, but it sure beats taking the heater box apart, cutting holes in it, or paying 1000 bucks to have it fixed.

Here is a link to the fix I used:

Free Ford Blend Door Fix

Ryan.