Fixed a Factory Fowl up today. Read this.

I work at a dealership and my partner got a customer who had an 05 Gt with 400 miles and a serious vibration when lugged down at 6-7 mph. It was bad enough the car would shake vilently.

I was close so I rode with him most of the time trying to track the source. Definately a drivetrain vibration but that was the only thing we were certain of. He had the trans out for a new clutch, driveshaft, and I pulled the diff. cover to check the rear...which was perfect to specs. Still a serious vibration persisted.
We used a Vibration frequency reader and couldn't get any dead set readings.

Those who haven't looked under an 05, they use a very unique driveshaft compared to any previous mustangs. It has 1 u-joint, 2 CV's, and a carrier bearing.

He talked to an engineer who didn't have much to offer either. Until he requested to know the color of marker drawn on the transmission cross-member. It turns out the wrong crossmember was installed and installed upside down as well. We stuck the new crossmember on and its a very smooth ride.

that sucks it took so long to pinpoint, but congrats on the accomplishment!! i hate it when you try to pipnpoint a noise or something and cant figure it out, then turns out to be a simple fix....

Based on the title, I assumed this was going to be a story about a bird.. spell checkers people!!

Spell check would have let it go, since fowl is a real word.

Bad spellers of the world, untie!

plese don't pic on the fast typers wit dirty handes. itstoo hard two type with greasy fangers.

That's foul.

since fowl is in fact a correctly spelled word, though not the word actually intended, I fail to see how spell checker would be a benefit.

Isn't that what I said?