[tphone]

I installed the stock protector with no problems at all. I used the Zagg protectors in the past on my Mogul and followed the same advice, and it really works:
Make sure the screen is absolutely clean.
Make a VERY weak soap solution, like 1 drop dawn to 1 8 oz glass of pure water. In this case, less is more. It's just to break the surface tension of the water.
Use a sprayer, like a windex sprayer or something like it. A real nice small one came with the Zagg invisible shield kit, and I still have it.
OK, the important part.
SPRAY YOUR FINGERS so the shield doesn't stick to them. Spray the back and front of the protector so it's just misted all over. DON'T spray the phone directly, you'll get water where you really don't want it.
This is what worked for me on 2 TP's.
I started at the bottom against the little ridge by the hard keys and centered it left to right.
I rolled about 3/4 inch up the screen and then used a squeegee (again, came from Zagg, but a credit card would do as well) to force the protector down onto the screen from the center of this area out towards the edges. This causes the protector to stick in this area and guarantees alignment for the remaining screen area.
Gradually work your way to the top squeezing the water out as you go to the sides and up.
Use a tissue to dry the edges of the drops of water that squeeze out.
In a day or so, any remaining water (minor) under the screen protector will have evaporated and you will be left with a perfect surface with no bubbles at all, and no dust.