The megathread on GH with the pics and comparisons must be gone.
We found out a year ago all you need is Oxy-Clean or generic about 2 times stronger than the strongest mixture on the box. It works for about 6 hours then the chemicals react out.
You can sit and debate all the Retrobrite discussions you want, but several of us did this with Oxy and water. That's it.
The Oxy is far cheaper (pennies) and safer and easier to use. Plus the extra can be used in your laundry. Doing this any other way is just silly. More expensive, possibly dangerous and harder to do.
Don't make it more complicated than it is. You guys sound like you're taking the expensive, harder route. Stop, turn around, go the other way!