I'm not taking the chance of ruining my car by having a screw back itself out and shoot down my intake manifold (yes, I've heard of this happening before).
I've already stated that I'm not a mechanic, and most major processes I've tried, have ended in a dissaster.
About the only things I concern myself with are:
changing the oil, changing headlights/blinkers, and cleaning the UIM and TB.
My own pops (who has worked on many a car in his day) won't even touch the concept of boring out the TB.
The offer is out there, and I wouldn't have put it out there if I could do it myself. After watching someone ELSE do it I MIGHT be able to attempt this. But I'm no machinist, and I wouldn't be crazy enough to pretend I am.
Your advice IS correct Mark, doing this myself would be the BEST idea. I just can't afford for something to go wrong.
These kinds of things are better left to the professionals.