I wasn't able to get all the plugs oriented the exact way I wanted when I installed them but I didn't sweat it too much and just tried to get it as close as possible.
I may be imagining it but I really feel as though I'm getting a lot better performance and torque out of my engine since I installed the set of modified plugs. That being said I should point out that the increase in power may be due, at least in part, to the fact that my exhaust system has just developed a rather healthy crack where the hanger bracket is welded onto one of the exhaust pipes just ahead of the first muffler. So now my engine may be breathing better due to lower back pressures and this may account for some or all of the increased torqueyness and pick-up (I think) I'm seeing right now. Yah, my car's a bit louder than it was before (but not like reaaaal loud) but I actually sorta like the sound it's making right now. It sounds kinda cool and "dangerous".
Vrooooom budda budda budda vroooooOOOOOM VROOOOOOOOOOOOOOOM ! heh heh heh....
So I think I'm recommending that some of you try that plug modification technique as well. It may just work like the article says it does.
More later...
Roj